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158-780: The Jeep Grand Cherokee is a range of mid-size SUVs produced by the American manufacturer Jeep . At its introduction, while most SUVs were still manufactured with body-on-frame construction, the Grand Cherokee has used a unibody chassis from the start. The Grand Cherokee's origins date back to 1983 when American Motors Corporation (AMC) was designing a successor to the Jeep Cherokee . Three outside (non-AMC) designers— Larry Shinoda , Alain Clenet, and Giorgetto Giugiaro —were also under contract with AMC to create and build

316-414: A countershaft (also called a layshaft ) and an output shaft . The input shaft is connected to the engine and spins at engine speed whenever the clutch is engaged. The countershaft has gears of various sizes, which are permanently meshed with the corresponding gear on the input shaft. The gears on the output shaft are also permanently meshed with a corresponding gear on the countershaft; however,

474-589: A keyless entry system , woodgrain interior appliqué, lace style alloy wheels, a driver information center with a compass, digitized climate control, an electrochromic rearview mirror, and Jensen brand stereo with multi-band equalizer. By 1996 the options list grew to include heated seats. Standard was the 4.0 L engine, with the 5.2 L V8 (and 5.9 L in 1998) being optional, as with other models. Package groups with various trim levels included: fog lamps, and skid plates, as well as convenience, lighting, luxury, power, security, and trailer towing packages. When it

632-538: A 5% import tariff, compared with 10% for passenger cars. In February 2024, voters in Paris mandated a triple parking charge rate for SUVs, citing environmental impact and street capacity; this followed similar decisions in Lyon and Tübingen with similar ordinances being considered by London, Brussels and Amsterdam. Many years after most passenger cars had transitioned to unibody construction, most SUVs continued to use

790-406: A central database. The system was so effective that after Chrysler purchased AMC in 1987, it expanded the system throughout its enterprise, thus connecting everyone involved in designing and building products. The Grand Cherokee thus became the first Chrysler-badged Jeep product. Development work for the new Jeep model continued and Chrysler's employees (after the 1987 buyout of AMC) were eager for

948-609: A clay model of the Cherokee XJ replacement, then known as the "XJC" project. However, the basic design for the Cherokee's replacement was well under way by AMC's in-house designers and the 1989 Jeep Concept 1 show car foretold the basic design. As AMC began the development of the next Jeep in 1985, management created a business process that is now known as product lifecycle management (PLM). According to François Castaing , Vice President for Product Engineering and Development,

1106-449: A cloth interior, and a standard five-speed manual transmission , while gaining the moniker "SE" name for the 1994 model year. Power windows and locks were not standard equipment on the base trim. The minimal price tag differential resulted in low consumer demand, and as a result, the low-line model was eventually discontinued. Additional standard features included a driver-side airbag and a four-wheel anti-lock braking system (ABS). The Laredo

1264-532: A coil-sprung independent front suspension . The relatively compact Niva is considered a predecessor to the crossover SUV and combines a hatchback-like passenger car body with full-time four-wheel drive, low-range gearing, and lockable center differential. Nonetheless, unibody SUVs remained rare until the 1984 Jeep Cherokee (XJ) was introduced and became a sales success. The introduction of the 1993 Jeep Grand Cherokee resulted in all Jeep SUV models using unibody construction, with many other brands following suit since

1422-708: A column shifter and more practical, as the gearbox was mounted in front of the engine. The linkage for the shifter could then be positioned on top of the engine. The disadvantage is that shifting is less comfortable and usually slower to operate. Newer small cars and MPVs , like the Suzuki MR Wagon , the Fiat Multipla , the Toyota Matrix , the Pontiac Vibe , the Chrysler RT platform cars,

1580-417: A column shifter are the ability to switch between the two most commonly used gears—second and third—without letting go of the steering wheel, and the lack of interference with passenger seating space in vehicles equipped with a bench seat . Some smaller cars in the 1950s and 1960s, such as Citroën 2CV , Renault 4 and early Renault 5 feature a shifter in the dash panel. This was cheaper to manufacture than

1738-527: A column-mounted manual shifter. Outside North America, the column-mounted shifter remained in production. All Toyota Crown and Nissan Cedric taxis in Hong Kong had the 4-speed column shift until 1999 when automatic transmissions were first offered. Since the late 1980s or early 1990s, a 5-speed column shifter has been offered in some vans sold in Asia and Europe, such as Toyota Hiace , Mitsubishi L400 and

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1896-468: A common, rear-wheel drive vehicle, any 4WD (four-wheel drive) needed many essential extra components, including a transfer case , a second differential, and constant-velocity joints for the driven front axle—which were expensive due to the precision involved in this required manufacturing gears and other specialized parts. Before World War   II, these were produced in the United States by only

2054-409: A crash than regular cars and that SUV roofs were more likely to cave in on passengers than in other cars, resulting in increased harm to passengers. Between 1991 and 2001, the United States saw a 150% increase in sport-utility vehicle rollover deaths. In 2001, though roll-overs constituted just 3% of vehicle crashes overall, they caused over 30% of occupant fatalities in crashes; and in crashes where

2212-483: A day, with electric cars reducing oil demand by under 100,000 barrels a day. Whereas SUVs can be electrified , or converted to run on a variety of alternative fuels , including hydrogen , their (manufacturing) emissions will always be larger than smaller electric cars. On average, SUVs consume about a quarter more energy than medium-size cars. Furthermore, the vast majority of these vehicles are not converted to use alternative fuels. Between 2010 and 2018 SUVs were

2370-400: A different second gear for downshifts. Although five of the six ratios were used, Chrysler decided to call it a "4-speed automatic". For MY 2001, the programming was changed to make use of all six ratios. Rather than have six forward gears, the transmission was programmed to act as a five-speed with the alternate second gear for downshifts. The rpm at 70 miles per hour (110 km/h) on a 545RFE

2528-400: A few specialized firms with limited production capacity. Due to the increase in demand for parts for the war effort, in the spring of 1942 Ford , Dodge , and Chevrolet joined in fabricating these parts in mass quantities, boosting their production more than 100-fold. An early usage of the term was the 1947 Crosley CC Four Sport Utility model, which used a convertible wagon body style and

2686-510: A gas that is linked to global warming. According to the International Energy Agency , from 2010 SUVs have been the second-largest contributor to the increase in global CO 2 emissions, second only to the power sector. SUVs were responsible for all of the 3.3 million barrels a day growth in oil demand from passenger cars between 2010 and 2018, whereas efficiency improvements in smaller cars saved over 2 million barrels

2844-411: A gear while the transmission requires the driver to adjust the throttle so that the transmission is not under load, and selecting a gear requires the engine RPM to be at the exact speed that matches the road speed for the gear being selected). Most motor vehicles use a pedal to operate the clutch; except for motorcycles, which usually have a clutch lever on the left handlebar . In most vehicles with

3002-425: A gearshift without fully disengaging the clutch). Larger differences in speed between the input shaft and the gear require higher friction forces from the synchromesh components, potentially increasing their wear rate. Even in modern transmissions where all of the forward gears are in a constant-mesh configuration, often the reverse gear uses the older sliding-mesh ("crash box") configuration. This means that moving

3160-462: A gerotor to transfer torque between the wheels on either side of the axle. The major advantage of Quadra-Drive was that the combined transfer case and progressive locking differentials in each axle could automatically control traction between all four wheels. However, only the center differential could be permanently locked, and only in 4Lo. The Quadra-Trac II system included the NV247 transfer case with

3318-516: A late-1980s release date; however, CEO Lee Iacocca was pushing for redesigned Chrysler minivans , thus delaying the Grand Cherokee's release until late 1992 as an Explorer competitor. Unlike the Explorer, the Grand Cherokee utilized monocoque (unibody) construction, whereas the Explorer was a derivative of the Ranger pickup with a separate body-on-frame . A Dodge-branded version was designed as

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3476-892: A long-bodied version of a full-size SUV, which is called an "extended-length SUV" like the Ford Expedition EL and the Chevrolet Suburban . The additional length is used to provide extra space for rear passengers or cargo. As per the full-size SUVs they are based on, most extended-length SUVs are built on dedicated platforms, full-sized pickups ( 1⁄2 ton ), or heavy-duty pickups (3⁄4 ton or more). Extended-length SUVs are mostly sold in North America but may also be exported to other markets in small numbers. Some SUVs or crossovers with sloping rear rooflines are marketed as "coupe crossover SUVs" or "coupe SUVs", even though they have four side doors for passenger access to

3634-400: A low-profile roof rack, and special 16" Ultra-Star wheels. The 5.9 Limited also received a 150 amp alternator and a 2-speed electric cooling fan. Other features include a standard 180-watt, 10-speaker Infinity Gold sound system with a rear roof-mounted soundbar, standard sunroof, and an interior swaddled with unique "calf's nap" soft leather and faux wood trim. The 5.9 Limited was awarded "4×4 of

3792-421: A manual transmission, the driver selects gears by manipulating a lever called a gear stick (also called a gearshift , gear lever or shifter ). In most automobiles, the gear stick is located on the floor between the driver and front passenger, but some cars have a gear stick that is mounted to the steering column or center console. The movement of the gear stick is transferred (via solid linkages or cables) to

3950-400: A mechanism is needed to stop the input shaft, such as using the synchronizer rings for fifth gear. However, some vehicles do employ a synchromesh system for the reverse gear, thus preventing possible crunching if reverse gear is selected while the input shaft is still spinning. Most transmissions include a lockout mechanism to prevent reverse gear from being accidentally selected while the car

4108-639: A multi-speed automatic transmission featuring Electronic Range Selection (ERS) to manually limit the high gear operating range. Trailer towing is rated 7,400 pounds (3,357 kg) for Hemi models and 6,800 pounds (3,084 kg) for Pentastar models. A 3.0 L turbocharged diesel V6 developed and built by Fiat Powertrain Technologies and VM Motori (with Multijet II injection) rated at 177 kW (241 PS; 237 hp) and 550 N⋅m (406 lb⋅ft; 56 kg⋅m) of torque offered in export markets from mid-2011. The new 3.0 L CRD turbodiesel engine

4266-483: A precaution should Jeep dealers struggle to handle so many Grand Cherokee units. The Grand Cherokee debuted in grand fashion at the 1992 North American International Auto Show in Detroit, Michigan . The vehicle that was driven was a Poppy Red Clear Coat 1993 Grand Cherokee ZJ Laredo with a quartz cloth interior and high-back bucket seats . Then Chrysler president Robert Lutz drove Detroit mayor, Coleman Young , from

4424-461: A separate body-on-frame method, due to being based on the chassis from a light truck , commercial vehicle , pickup truck , or off-road vehicle . The first mass-produced unibody four-wheel-drive passenger car was the Russian 1955 GAZ-M20 Pobeda M-72 , which could be considered the first crossover car. The 1977 Lada Niva was the first off-road vehicle to use both a unibody construction and

4582-774: A significant part in reviving Chrysler's fortunes by moving it into the then-nascent market for high-margin sports utility vehicles." Upon its introduction, it was the first full-scale manufacture of an automobile in the US using HFC-134a refrigerant in place of HCFC-12 for the HVAC system. The original Grand Cherokee was launched in 1992 as a 1993 model year vehicle in the luxury SUV segment. The "ZJ" models, manufactured from 1992 until 1998, originally came in three trim levels: base (also known as SE), Laredo, and Limited, subsequent trims were added, including Orvis (MY 95–98) and TSI (MY97–98). The base model included features such as full instrumentation,

4740-462: A study by the U.S.-based IIHS found that, of a sample of 79 crashes from three urban areas in Michigan, SUVs caused more serious injuries compared to cars when impacts occurred at greater than 31 km/h (19 mph). The IIHS noted the sample size of the study was small and that more research is needed. The popularity of SUVs contributed to an increase in pedestrian fatalities in the U.S. during

4898-441: A switch or pressing a button on the gearshift knob or on the steering column, or automatically by momentarily lifting the foot from the accelerator with the vehicle traveling above a certain road speed. Automatic overdrives were disengaged by flooring the accelerator, and a lockout control was provided to enable the driver to disable overdrive and operate the transmission as a normal (non-overdrive) transmission. The term 'overdrive'

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5056-484: A synchromesh and teeth on each side in order to lock either gear to the shaft. Unlike some other types of clutches (such as the foot-operated clutch of a manual-transmission car), a dog clutch provides non-slip coupling and is not suited to intentional slipping. In order to provide smooth gearshifts without requiring the driver to manually match the engine revs for each gearshift, most modern passenger car transmissions use 'synchromesh' (also called 'synchronizer rings') on

5214-411: A three-speed manual transmission. This transmission, along with many similar designs that it inspired, was a non-synchronous (also called sliding-mesh ) design where gear changes involved sliding the gears along their shafts so that the desired cogs became meshed. The driver was therefore required to use careful timing and throttle manipulation when shifting, so the gears would be spinning at roughly

5372-527: A total of 375 hp (380 PS; 280 kW) and 470 lb⋅ft (637 N⋅m; 65 kg⋅m). The 17 kWh battery pack provides an estimated 25 miles (40 km) of range when running solely on electric power. It has the ability to tow 6,000 pounds (2,722 kg). Starting from 2023 models, Trailhawk trim will only available in 4xe PHEV. All engines, including the PHEV powertrain, are paired with an eight-speed automatic transmission, with Stellantis manufacturing

5530-456: A transmission-shift strategy to automatically prevent a vehicle from moving, under certain circumstances, even if the driver fails to select "PARK." Mid-size SUV A sport utility vehicle ( SUV ) is a car classification that combines elements of road-going passenger cars with features from off-road vehicles , such as raised ground clearance and four-wheel drive . There is no commonly agreed-upon definition of an SUV, and usage of

5688-413: Is 2,000 rpm, 200 rpm less than the 45RFE programming. 1999 and 2000 model-year WJ owners can have their 45RFE transmission's programming flashed to enable the extra gear as both transmissions are physically the same. (Must purchase new PCM and ABS module and program them with a fake VIN to make this work.) The 42RE 4-speed automatic remained the transmission for the inline 6 engine. It had slight changes from

5846-429: Is also used to describe a gear with a ratio of less than one (e.g., if the top gear of the transmission has a ratio of 0.8:1). Vehicles with a manual transmission can often be push started when the starter motor is not operational, such as when the car has a dead battery or when the starter motor itself has malfunctioned and is unable to deliver sufficient rotational energy to turn the engine over. When push-starting,

6004-429: Is an automatic transmission . Common types of automatic transmissions are the hydraulic automatic transmission (AT) and the continuously variable transmission (CVT). The automated manual transmission (AMT) and dual-clutch transmission (DCT) are internally similar to a conventional manual transmission, but are shifted automatically. Alternatively, there are semi-automatic transmissions . These systems are based on

6162-482: Is available in European markets as 140 kW (190 PS; 188 hp) low-power version. The Grand Cherokee SRT8 , which started production on July 16, 2011, is equipped with a 470-horsepower (350 kW; 477 PS) 6.4 L Hemi V8 engine. Jeep claims the new SRT8 gets 13 percent better fuel economy than its predecessor. For the 2022 model year, Jeep marketed the outgoing Grand Cherokee WK2 alongside

6320-543: Is available with an improved 5.7 L Hemi engine rated at 357 hp (362 PS; 266 kW) and 389 lb⋅ft (527 N⋅m; 53.8 kg⋅m) of torque. The engine uses variable valve timing to increase fuel economy. The fourth-generation WK2 Grand Cherokee went on sale in summer 2010 as a 2011 model. It was unveiled at the 2009 New York Auto Show . In 2009, during its development, Chrysler management used it as an example of future products to convince United States, federal regulators of Chrysler's future viability, for

6478-427: Is connected via a pinion gear at the end of the counter/output shaft. In a modern constant-mesh manual transmission, the gear teeth are permanently in contact with each other, and dog clutches (sometimes called dog teeth ) are used to select the gear ratio for the transmission. When the dog clutches for all gears are disengaged (i.e. when the transmission is in neutral), all of the gears are able to spin freely around

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6636-440: Is less than a quarter of what it was for 2004 models. With ESC dramatically reducing rollover risk, the inherent advantages offered by SUVs' greater size, weight, and height emerge more clearly. Today's SUVs have the lowest driver death rate of any vehicle type." The high danger for cyclists and pedestrians of being seriously injured or even killed by SUV drivers has caused some public protests against SUVs in urban areas. In 2020,

6794-445: Is moving forwards. This can take the form of a collar underneath the gear knob which needs to be lifted or requiring extra force to push the gearshift lever into the plane of reverse gear. Another design of transmission that is used in older cars , trucks , and tractors , is a non-synchronous transmission (also known as a crash gearbox). Non-synchronous transmissions use a sliding-mesh (or constant-mesh, in later years) design and have

6952-746: Is not considered a manual transmission. Some automatic transmissions are based on the mechanical build and internal design of a manual transmission but have added components (such as computer -controlled actuators and sensors ) which automatically control the timing and speed of the gear shifts and clutch; this design is typically called an automated manual transmission (or sometimes a clutchless manual transmission ). Contemporary manual transmissions for cars typically use five or six forward gears ratios and one reverse gear, however, transmissions with between two and seven gears have been produced at times. Transmissions for trucks and other heavy equipment often have between eight and twenty-five gears, in order to keep

7110-422: Is sometimes defined as a crossover being built using a unibody platform (the type used by most passenger cars), while an SUV is built using a body-on-frame platform (the type used by off-road vehicles and light trucks). However, these definitions are often blurred in practice, since unibody vehicles are also often referred to as SUVs. Also, crossover is a relatively recent term and early unibody SUVs (such as

7268-648: Is the 3.6 L Pentastar V6 gasoline engine, producing 290 hp (294 PS; 216 kW), and 257 lb⋅ft (348 N⋅m; 36 kg⋅m) of torque. The optional engine, available on all non-PHEV Grand Cherokee trims aside from the Laredo, Altitude, and Limited, is the 5.7 L Hemi V8 gasoline engine with the Multi Displacement System (MDS) cylinder deactivation system, producing 360 horsepower (365 PS; 268 kW), and 390 lb⋅ft (529 N⋅m; 54 kg⋅m) of torque. When equipped with

7426-590: Is therefore unrelated to the design of later SUVs. Several models of carryall wagons began to be offered with four-wheel drive, beginning in 1949 when the Willys Jeep Station Wagon introduced the option of four-wheel drive. Four-wheel-drive versions of the Chevrolet Suburban were introduced for 1955, followed by the International Harvester Travelall in 1956 (credited as being the first full-size SUV) and

7584-404: Is used to reverse the direction in which the output shaft rotates. In many transmissions, the input and output shafts can be directly locked together (bypassing the countershaft) to create a 1:1 gear ratio which is referred to as direct-drive . In a transmission for longitudinal engined vehicles (e.g. most rear-wheel-drive cars), it is common for the input shaft and output shaft to be located on

7742-568: The GPS navigation map, and send destinations directly to the central touchscreen display's navigation system. The display features a special coating that allows only the front passenger to view it while the vehicle is in motion. Originally scheduled to be released for the 2021 model year, but delayed until 2022, The two-row Grand Cherokee is available in seven trim levels: Laredo, Altitude, Limited, Overland, Trailhawk, Summit, and Summit Reserve (the off-road-oriented Trailhawk trim will not be available on

7900-674: The Honda Element , the Honda Civic , the Daihatsu Sigra , and the Honda Avancier , may feature a manual or automatic transmission gear shifter located on the vehicle's instrument panel, similar to the mid-1950s Chryslers and Powerglide Corvairs . Console-mounted shifters are similar to floor-mounted gear shifters in that most of the ones used in modern vehicles operate on a horizontal plane and can be mounted to

8058-730: The Jefferson North Assembly Plant on North Jefferson Avenue via a police escort to Cobo Hall , up the steps of Cobo Hall and through a plate glass window to show off the new vehicle. Sales of the 1993 model year Grand Cherokee began in April 1992. Production of the Grand Cherokee started shortly afterward in the purpose-built Jefferson North Assembly in Detroit, Michigan. European Grand Cherokees are manufactured in Austria by Magna Steyr . The Grand Cherokee "played

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8216-776: The Mercedes-Benz W166 series. The Chrysler-designed platform was part of the DaimlerChrysler engineering projects that were to launch the WK2 Grand Cherokee with the Mercedes-Benz ML to follow. Engine choices include the all-new 3.6 L Pentastar V6 and 5.7 L Hemi V8. The Hemi V8 retains the Multiple Displacement System (MDS) that shuts down four cylinders in low-power driving situations. The V8 included

8374-566: The National Highway Traffic Safety Administration (NHTSA) ordered a recall of 2014 and 2015 Jeep Grand Cherokees and other cars that use an electronic gear shifter because it sometimes does not go into (or does not remain in) the park position, despite the operator's best intentions. Consumers reported that they put the car in park and left the engine running, and then were surprised when the car rolled away under power. An investigation by FCA US and

8532-489: The Power Wagon Town Wagon in 1957. Manual transmission Early automobiles used sliding-mesh manual transmissions with up to three forward gear ratios. Since the 1950s, constant-mesh manual transmissions have become increasingly commonplace, and the number of forward ratios has increased to 5-speed and 6-speed manual transmissions for current vehicles. The alternative to a manual transmission

8690-577: The Quadra-Drive II system. The 2021 Grand Cherokee is the third Fiat Chrysler Automobiles product to offer the new UConnect 5 infotainment suite, which will offer either an 8.4-inch or 10.1-inch high-resolution touchscreen display, SiriusXM Satellite Radio with 360L, SiriusXM Travel Link services, UConnect Guardian (powered by SiriusXM ), a 4G LTE wireless Internet hotspot, wireless Apple CarPlay and Android Auto smartphone integration, and an integrated virtual assistant that can be activated by

8848-427: The splines on the shaft, forcing that shaft to rotate at the same speed as the gear hub. However, the clutch can move back and forth on the shaft, to either engage or disengage the splines. This movement is controlled by a selector fork that is linked to the gear lever. The fork does not rotate, so it is attached to a collar bearing on the selector. The selector is typically symmetric: it slides between two gears and has

9006-415: The stereo system or HVAC system , to help prevent accidental activation or driver confusion. More and more small cars and vans from manufacturers such as Suzuki , Honda , and Volkswagen are featuring console shifters in that they free up space on the floor for other features such as storage compartments without requiring that the gear shift be mounted on the steering column. Also, the basic location of

9164-513: The "Utility Vehicle" category per the Society of Indian Automobile Manufacturers (SIAM) definitions and carry a 27% excise tax. Those that are 4 metres (13 feet) long, have a 1,500 cc (92 cu in) engine or larger, along with 170 mm (6.7 in) of ground clearance, are subject to a 30% excise duty. In Australia, SUV sales were helped by having lower import duties than passenger cars. Up until January 2010, SUVs were subject to

9322-471: The 1948 Ferrari 166 Inter and the 1953 Alfa Romeo 1900 Super Sprint . Five-speed transmissions became widespread during the 1980s, as did the use of synchromesh on all forward gears. Six-speed manual transmissions started to emerge in high-performance vehicles in the early 1990s, such as the 1990 BMW 850i and the 1992 Ferrari 456 . The first 6-speed manual transmission was introduced in the 1967 Alfa Romeo 33 Stradale . The first 7-speed manual transmission

9480-498: The 1984 Jeep Cherokee) are rarely called crossovers. Due to these inconsistencies, the term SUV is often used as a catch-all for both crossovers and SUVs. Outside of the United States, the term crossover tends to be used for C-segment ( compact ) or smaller vehicles, with large unibody vehicles—such as the Mercedes-Benz GLS-Class , BMW X7 , and Range Rover —usually referred to as SUVs rather than crossovers. In

9638-401: The 1990s and early 2000s was partly due to buyers perceiving that SUVs provide greater safety for occupants, due to their larger size and raised ride height. Regarding the safety of other road users, SUVs are exempted from U.S. regulation stating that a passenger car bumper must protect the area between 16 and 20 inches (41 and 51 cm) above the ground. This often increases the damage to

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9796-525: The 1993 model year. Three different four-wheel-drive systems will be available: Quadra-Trac I, Quadra-Trac II featuring low range, and Quadra Trac II with Electronic Limited Slip Differential (ELSD) also known as Quadra-Drive II with low range and "Quadra Lift" air suspension system, as well as rear-wheel drive . When properly equipped, the Grand Cherokee will be able to tow up to 7,200 pounds (3,300 kg). The Grand Cherokee will also be able to ford up to two feet (24 in) of water (when equipped with

9954-590: The 1996 model year. In 1997, for the 1998 model year, a variant of the top-level Grand Cherokee Limited, the "5.9 Limited" was introduced. Jeep ads claimed it to be the "world's fastest sport utility vehicle", verified by third-party testing. The primary improvements in the 5.9 Limited version included a 245-horsepower (248 PS; 183 kW) 5.9 L OHV V8 engine, heavy-duty 46RE automatic transmission, functional heat-extracting hood louvers, unique wide-slot body-colored grille with mesh inserts, special rocker moldings, low-restriction exhaust with three-inch chrome tip,

10112-559: The 2010s, alongside other factors such as distracted and drunk driving. A 2021 study by the University of Illinois Springfield showed that SUVs are 8 times more likely to kill children in a collision than passenger cars, and multiple times more lethal to adult pedestrians and cyclists. SUVs generally have poorer fuel efficiency than smaller cars, and thus contribute more to environmental degradation and global warming . SUVs emit about 700 megatonnes of carbon dioxide per year,

10270-598: The 5.7 L HEMI V8 gasoline engine, the all-new Grand Cherokee has a maximum towing capacity of 7,200 pounds (3,300 kg). However, the 2023 models no longer offer this V8 option. The 4xe PHEV powertrain, first available in Jeep Wrangler (JL) , is introduced to the Grand Cherokee in this generation. It is available on the Limited, Trailhawk, Overland, Summit, and Summit Reserve trim levels. It uses an electrically assisted 2.0 L turbocharged four-cylinder making

10428-399: The 5.7 L Hemi V8 gasoline engine with Multi Displacement System (MDS) rated at 357 hp (362 PS; 266 kW) and 390 lb⋅ft (529 N⋅m; 54 kg⋅m) of torque. For the first time, the Grand Cherokee will offer a 950-watt, nineteen-speaker McIntosh premium amplified surround sound audio system, replacing the previous 825-watt, eighteen-speaker Harman Kardon system on

10586-554: The 850RE transmission for the 3.6 L model, and ZF manufacturing the 8HP70 transmission for the 5.7 L model (all transmissions are based on the design of the ZF 8HP transmission , and use a new rotary controller in the center console). In addition to rear-wheel-drive, three different four-wheel-drive systems are available, and use a new Selec-Terrain toggle controller (the Quadra Drive II four-wheel-drive system also features

10744-696: The AW4 during the latter half of the 1993 model year) or an Aisin AX15 manual transmission . Low demand for the manual transmission resulted in its discontinuation after 1994, but European-market ZJs retained it when coupled to the diesel engine (which was unavailable in North America). The drive train choices included rear-wheel drive or four-wheel-drive . In 1995, the engine's rating was reduced by 5 horsepower (5 PS; 4 kW) to 185 horsepower (188 PS; 138 kW) due to new EPA regulations starting with

10902-461: The CAFE regulations were changed to classify small, two-wheel-drive SUVs as passenger cars. However, the licensing and traffic enforcement regulations in the United States vary from state to state, and an SUV may be classified as a car in some states but as a truck in others. For industry production statistics, SUVs are counted in the light truck product segment. In India, all SUVs are classified in

11060-554: The Euro NCAP crash safety tests conducted in 2005. The Grand Cherokee received a minor facelift for 2008 with revised headlights and available High-Intensity Discharge (HID) Headlamps with auto-leveling. The lower portion of the front bumper was still removable as it was from launch to increase the approach angle for off-road use. The 4.7 L was refined, now producing 305 hp (227 kW; 309 PS), and 334 lb⋅ft (453 N⋅m; 46 kg⋅m). The 2009 Jeep Grand Cherokee

11218-703: The Grand Cherokee WK2 . Other new features available for the first time on a Grand Cherokee include massaging front seats, a rear seat view camera, a surround-view (360-degree) camera system, an inside fam cam for viewing different seats, a rearview camera digital mirror, wireless Apple CarPlay and Android Auto smartphone integration, Qi -compatible wireless device charging, a passenger side screen with HDMI interface, heated and ventilated second-row seats, second-row captain's chairs, twenty-one inch tires and wheels, Level 2 semi-autonomous driving technology, and power-folding second and third-row seats. For 2021,

11376-475: The Grand Cherokee L, along with the all-new 2022 two-row Grand Cherokee, received the front passenger interactive touchscreen display, which was first introduced on the Wagoneer and Grand Wagoneer . Integrated into the woodgrain trim on the passenger side of the dashboard, the widescreen display with HDMI interface allows the passenger to stream music wirelessly via Bluetooth to the vehicle's audio system, view

11534-524: The National Highway Traffic Safety Administration found some drivers have exited their vehicles without first selecting "PARK." Such behavior may pose a safety risk if a vehicle's engine is still running. The company is aware of 41 injuries that are potentially related. It was also the cause of actor Anton Yelchin 's death. The vehicles involved in these events were inspected and no evidence of equipment failure

11692-824: The PT Cruiser, being classified as light trucks. This classification as trucks allowed SUVs to be regulated less strictly than passenger cars under the Energy Policy and Conservation Act for fuel economy, and the Clean Air Act for emissions. However, from 2004 onwards, the United States Environmental Protection Agency (EPA) began to hold sport utility vehicles to the same tailpipe emissions standards as cars for criteria pollutants, though not greenhouse gas emissions standards as they were not set until 2010. In 2011,

11850-616: The Quadra Lift air suspension system). All engines will be mated to a ZF -sourced eight-speed automatic transmission that is controlled via a rotary shift knob. The Selec Terrain system, first introduced on the Jeep Grand Cherokee (WK2) , will also be available on the Grand Cherokee WL, and is now controlled via a toggle switch in the center console. The Quadra Lift air suspension system is available only with

12008-590: The Quadra-Lift air suspension system. The Quadra-Lift system can raise or lower the vehicle to different heights, and is standard on all Trailhawk models. At the 2022 New York International Auto Show (NYIAS), Jeep introduced the 2022 Grand Cherokee 4xe High Altitude Edition Package. Available on both Summit and Summit Reserve trims, the High Altitude Edition Package features dark exterior accents, and unique 21-inch wheels. Following

12166-551: The SUV. Automotive websites' descriptions of SUVs range from specifically "combining car-like appointments and wagon practicality with steadfast off-road capability" with "chair-height seats and picture-window visibility" to the more general "nearly anything with available all-wheel drive and raised ground clearance". It is also suggested that the term "SUV" has replaced "jeep" as a general term for off-road vehicles. American dictionary definitions for SUVs include: In British English,

12324-512: The Summit Reserve 4X4 trim. The Grand Cherokee L is available in five trim levels: Laredo (and Laredo X), Altitude (and Altitude X), Limited, Overland, and Summit (and Summit Reserve). While all models include a 3.6 L Pentastar V6 gasoline engine producing 290 hp (294 PS; 216 kW) and 257 lb⋅ft (348 N⋅m; 36 kg⋅m) (now assisted by the eTorque Mild Hybrid system), Overland and Summit models will also offer

12482-470: The U.S. and Canada had a 3-speed column-mounted shifter—the first generation Chevrolet/GMC vans of 1964–70 vintage had an ultra-rare 4-speed column shifter. The column-mounted manual shifter disappeared in North America by the mid-1980s, last appearing in the 1987 Chevrolet pickup truck . Prior to 1980, the GM X platform compacts (Chevrolet Nova and its rebadged corporate clones) were the final passenger cars to have

12640-808: The United Kingdom The Collins English Dictionary defines a sport utility vehicle as a "powerful vehicle with four-wheel drive that can be driven over rough ground. The abbreviation SUV is often used." In Europe, the term SUV is generally used for road-oriented vehicles, described as "J-segment" by the European Commission . "Four-by-four" or the brand name of the vehicle is typically used for off-road-oriented vehicles. Similarly, in New Zealand, vehicles designed for off-road use are typically referred to as "four-wheel drives" instead of SUVs. In

12798-584: The United Kingdom, a crossover is sometimes defined as a hatchback model with raised ride height and SUV-like styling features. The smallest size class of SUVs is the "mini SUV". In Japan, SUVs under 3,400 mm (133.9 in)—such as the Mitsubishi Pajero Mini —are included in the kei car category and therefore attract lower taxes. Many recent vehicles labeled as mini SUVs are technically subcompact crossovers and are built on

12956-516: The United States, many government regulations simply have categories for "off-highway vehicles" which are loosely defined and often result in SUVs (along with pick-up trucks and minivans ) being classified as light trucks . For example, corporate average fuel economy (CAFE) regulations previously included "permit greater cargo-carrying capacity than passenger carrying volume" in the definition for trucks, resulting in cars with removable rear seats, like

13114-561: The Year" for 1998 by Petersen's 4-Wheel & Off-Road magazine. The production of this model was 14,286 units. Export models produced at the plant in Graz, Austria, were given the vehicle designation of "ZG". Launched in September 1998, the redesigned WJ 1999 Grand Cherokee shared just 127 parts with its predecessor (mostly fasteners). The European model was coded WG. The spare tire

13272-444: The affected vehicles later. To remedy the problem, Jeep dealerships will install a trailer hitch onto the rear bumpers of the vehicles that will protect the fuel tank if the vehicle is involved in a rear impact. If an affected vehicle is not currently equipped with a trailer hitch , one will be installed onto it, and older Jeep and non-factory aftermarket trailer hitches will be replaced with one from Chrysler Corporation. Despite

13430-530: The all-new Grand Cherokee WL model as the Grand Cherokee WK (not to be confused with the Grand Cherokee (WK) , which was produced from 2005 until 2010). The lineup is condensed to base Laredo "E", mid-level Laredo "X", and range-topping Limited trims, with the only engine option being the base 3.6 L Pentastar V6 gasoline engine. The fifth generation (WL) Grand Cherokee was revealed as

13588-484: The collar from bridging the locking rings while the speeds are still being synchronized. This is achieved through 'blocker rings' (also called 'baulk rings'). The synchro ring rotates slightly because of the frictional torque from the cone clutch. In this position, the dog clutch is prevented from engaging. Once the speeds are synchronized, friction on the blocker ring is relieved and the blocker ring twists slightly, bringing into alignment certain grooves or notches that allow

13746-463: The cone-shaped sleeve on the dog collar so that the friction forces can reduce the difference in rotational speeds. Once these speeds are equalized, the dog clutch can engage, and thus the new gear is now in use. In a modern gearbox, the action of all of these components is so smooth and fast it is hardly noticed. Many transmissions do not include synchromesh on the reverse gear (see Reverse gear section below). The synchromesh system must also prevent

13904-478: The design of modern SUVs was the 1940 Humber Heavy Utility , a four-wheel-drive off-road vehicle built on the chassis of the Humber Super Snipe passenger car. The most prohibitive initial factors to the potential civilian popularity of an SUV-like car were their cost and the availability of certain critical parts. Before the war, adding four-wheel drive to a car almost doubled its cost. Compared to

14062-417: The design of, and are technically similar to, a conventional manual transmission. They have a gear shifter which requires the driver's input to manually change gears, but the driver is not required to engage a clutch pedal before changing gear. Instead, the mechanical linkage for the clutch pedal is replaced by an actuator , servo , or solenoid and sensors , which operate the clutch system automatically when

14220-404: The designations are increasingly blurred because of the capabilities of the vehicles, the labelling by marketers, and the electrification of new models. The predecessors to SUVs date back to military and low-volume models from the late 1930s, and the four-wheel-drive station wagons and carryalls that began to be introduced in 1949. Some SUVs produced today use unibody construction; however, in

14378-438: The dog clutch to fall into the engagement. Common metals for synchronizer rings are brass and steel , and are produced either by forging or sheet metal shaping. The latter involves stamping the piece out of a sheet metal strip and then machining to obtain the exact shape required. The rings are sometimes coated with anti-wear linings (also called 'friction linings') made from molybdenum , iron , bronze or carbon (with

14536-427: The dog clutches require the input shaft speed to match that of the gear being selected; otherwise, the dog teeth will fail to engage and a loud grinding sound will be heard as they clatter together. Therefore, to speed up or slow down the input shaft as required, cone-shaped brass synchronizer rings are attached to each gear. When the driver moves the gearshift lever towards the next gear, these synchronizer rings press on

14694-417: The driver to select the next-higher or next-lower gear. In a vehicle with a manual transmission, the flywheel is attached to the engine's crankshaft , therefore rotating at engine speed. A clutch disc sits between the flywheel and the transmission pressure plate which is attached to the transmission input shaft, controlling whether the transmission is connected to the engine or not. The clutch pedal controls

14852-631: The driver touches or moves the gearshift . This removes the need for a physical clutch pedal. A manual transmission requires the driver to operate the gear stick and clutch in order to change gears (unlike an automatic transmission or semi-automatic transmission , where one (typically the clutch) or both of these functions are automated ). Most manual transmissions for cars allow the driver to select any gear ratio at any time, for example shifting from second to fourth gear, or fifth to third gear. However, sequential manual transmissions , which are commonly used in motorcycles and racing cars , only allow

15010-413: The early 1950s, most cars only had synchromesh for the shift from third gear to second gear (drivers' manuals in vehicles suggested that if the driver needed to shift from second to first, it was best to come to a complete stop beforehand). Up until the late 1970s, most transmissions had three or four forward gear ratios, although five-speed manual transmissions were occasionally used in sports cars such as

15168-407: The energy generated by the wheels moving on the road is transferred to the driveshaft, then the transmission, and eventually the crankshaft. When the crankshaft spins as a result of the energy generated by the rolling of the vehicle, the motor is cranked over. This simulates what the starter is intended for and operates in a similar way to crank handles on very old cars from the early 20th century, with

15326-456: The engine speed within the optimal power band for all typical road speeds. Operating such transmissions often uses the same pattern of shifter movement with a single or multiple switches to engage the next sequence of gears. Many of the first automobiles were rear-engined, with a simple belt-drive functioning as a single-speed transmission. The 1891 Panhard et Levassor is considered a significant advance in automotive transmissions since it used

15484-399: The fifth selector on the main shaft. This means that when the vehicle is stopped and idling in neutral with the clutch engaged and the input shaft spinning, the third-, fourth-, and fifth-gear pairs do not rotate. When neutral is selected, none of the gears on the output shaft are locked to the shaft, allowing the input and output shafts to rotate independently. For reverse gear, an idler gear

15642-526: The first-gen Fiat Ducato . Many European cars had manual column shifts and the Renault 16TX had a 5 speed. Column shifters are mechanically similar to floor shifters, although shifting occurs in a vertical plane instead of a horizontal one. Because the shifter is further away from the transmission, and the movements at the shifter and at the transmission are in different planes, column shifters require more complicated linkage than floor shifters. Advantages of

15800-442: The forces required or provide a faster shift time . The first car to use a manual transmission with synchromesh was the 1929 Cadillac . Most North American marques had adopted synchronized manual transmissions, usually for second and high gears, by the mid-1930s. In 1947, Porsche patented the split ring synchromesh system. The 1952 Porsche 356 was the first car to use a transmission with synchromesh on all forward gears. In

15958-401: The forward gears. These devices automatically match the speed of the input shaft with that of the gear being selected, thus removing the need for the driver to use techniques such as double-clutching . The synchromesh transmission was invented in 1919 by Earl Avery Thompson and first used on production cars by Cadillac in 1928. The need for synchromesh in a constant-mesh transmission is that

16116-418: The front-wheel-drive transaxle's ring gear. This allows for a narrower transmission since the length of each countershaft is halved compared with one that contains four gears and two shifters. The fixed and free gears can be mounted on either the input or output shaft or both. For example, a five-speed transmission might have the first-to-second selectors on the countershaft, but the third-to-fourth selector and

16274-486: The fuel tanks of these SUVs. In moderate- to high- energy rear collisions, the fuel tank (located behind the rear axle) could be compromised structurally, resulting in fuel leakage and fire. The NHTSA claims that it has reports of 157 deaths resulting from fires caused by Grand Cherokees crashing. Also affected are 2002–2007 Jeep Liberty models and 1986–2001 Jeep Cherokee models, which totals about 5.1 million affected vehicles. In June 2013, Chrysler Corporation responded to

16432-430: The future under the sense of security, all the while increasing the rate of fatalities of pedestrians. There is no universally accepted definition of the sport utility vehicle. Dictionaries, automotive experts, and journalists use varying wordings and defining characteristics, in addition to regional variations of usage by both the media and the general public. The auto industry also has not settled on one definition of

16590-437: The gear shift in comparison to the column shifter makes console shifters easier to operate than column shifters. In the 1950s, 1960s, and 1970s, fuel-efficient highway cruising with low engine speed was in some cases enabled on vehicles equipped with 3- or 4-speed transmissions by means of a separate overdrive unit in or behind the rear housing of the transmission. This was actuated either manually while in high gear by throwing

16748-410: The gearshift lever into reverse results in gears moving to mesh together. Another unique aspect of the reverse gear is that it consists of two gears—an idler gear on the countershaft and another gear on the output shaft—and both of these are directly fixed to the shaft (i.e. they are always rotating at the same speed as the shaft). These gears are usually spur gears with straight-cut teeth which—unlike

16906-410: The helical teeth used for forward gear—results in a whining sound as the vehicle moves in reverse. When reverse gear is selected, the idler gear is physically moved to mesh with the corresponding gears on the input and output shafts. To avoid grinding as the gears begin to the mesh, they need to be stationary. Since the input shaft is often still spinning due to momentum (even after the car has stopped),

17064-475: The introduction of the Grand Cherokee 4xe, the High Altitude Edition Package will also be available on the 2022 Jeep Grand Cherokee L in both Summit and Summit Reserve trims. A new exterior color, Hydro Blue Pearlcoat, will also be available on most Grand Cherokee, Grand Cherokee 4xe, and Grand Cherokee L models. In 2010, the National Highway Traffic Safety Administration (NHTSA) launched an investigation into 1993–2004 model year Jeep Grand Cherokees which involves

17222-546: The largest size of commonly produced SUVs. Some, such as the Ford Expedition , and Chevrolet Tahoe , are marketed for their off-road capabilities, and others, such as the Lincoln Navigator and Cadillac Escalade , are marketed as luxury vehicles. While a few full-size SUVs are built on dedicated platforms; most share their platforms with full-size pickup trucks . Some North American SUVs are available as

17380-645: The late 1930s and became common during the 1940s and 1950s. If a U.S. vehicle was equipped with overdrive , it was very likely to be a Borg-Warner type, operated by briefly backing off the accelerator pedal when above 28 mph (45 km/h) to enable, and momentarily flooring the same pedal to return to normal gear. The control simply disables overdrive for such situations as parking on a hill or preventing unwanted shifting into overdrive. [REDACTED] Later, European and Japanese models began to have 4-speed column shifters with this shift pattern: [REDACTED] A majority of North American-spec vehicles sold in

17538-399: The latter usually reserved for high-performance transmissions due to their high cost). Mechanical wear of the synchronizer rings and sleeves can cause the synchromesh system to become ineffective over time. These rings and sleeves have to overcome the momentum of the entire input shaft and clutch disk during each gearshift (and also the momentum and power of the engine, if the driver attempts

17696-481: The long wheelbase Grand Cherokee L model). Compared to the previous generation two-row Grand Cherokee, the total passenger volume increases by 4.1 cubic feet (120 L), while cargo space is up 1.4 cubic feet (40 L). Engine choices are carried over from the previous generation Grand Cherokee (WK2) , with two naturally-aspirated units, but also added a turbocharged gasoline/electric plug-in hybrid (PHEV) powertrain. The base engine on all non-PHEV Grand Cherokees

17854-497: The mid-1990s. Today, most SUVs in production use a unibody construction and relatively few models continue to use body-on-frame construction. SUVs are typically of a two-box design similar to a station wagon . The engine compartment is in the front, followed by a combined passenger/cargo area (unlike a sedan, which has a separate trunk/boot compartment). Up until approximately 2010, many SUV models were available in two-door body styles. Since then, manufacturers began to discontinue

18012-462: The nickname "crash" because the difficulty in changing gears can lead to gear shifts accompanied by crashing/crunching noises. Vehicles with manual transmissions use a clutch to manage the linkage between the engine and the transmission, and decouple the transmission from the engine during gearshifts and when the vehicle is stationary. Without a clutch, the engine would stall any time the vehicle stopped, and changing gears would be difficult (deselecting

18170-547: The other car in a collision with an SUV, because the impact occurs at a higher location on the other car. In 2000–2001, 60% of fatal side-impact collisions were where the other vehicle was an SUV, an increase from 30% in 1980–1981. The introduction of electronic stability control (ESC) and rollover mitigation, as well as increased analysis of the risks of a rollover, led the IIHS to report in 2015 that "the rollover death rate of 5 per million registered vehicle years for 2011 models

18328-406: The other shaft, with a bearing located between the two shafts. In a transmission for transverse engined vehicles (e.g., front-wheel-drive cars), there are usually only two shafts: input and countershaft (sometimes called input and output). The input shaft runs the whole length of the gearbox, and there is no separate input pinion. These transmissions also have an integral differential unit, which

18486-489: The output shaft gears are able to rotate independently of the output shaft itself (through the use of bearings located between the gears and the shaft). Through the use of collars (operated using the shift rods ), the speed of the output shaft becomes temporarily locked to the speed of the selected gear. Some transmission designs—such as in the Volvo 850 and S70—have two countershafts, both driving an output pinion meshing with

18644-401: The output shaft inside the transmission. This is a fundamental difference compared with a typical hydraulic automatic transmission , which uses an epicyclic (planetary) design, and a hydraulic torque converter . An automatic transmission that allows the driver to control the gear selection (such as shift paddles or "+/-" positions on the gear selector) is called a manumatic transmission, and

18802-424: The output shaft. When the driver selects a gear, the dog clutch for that gear is engaged (via the gear selector rods), locking the transmission's output shaft to a particular gear set. This means the output shaft rotates at the same speed as the selected gear, thus determining the gear ratio of the transmission. The dog clutch is a sliding selector mechanism that sits around the output shaft. It has teeth to fit into

18960-593: The past, more SUVs used body-on-frame construction. During the late 1990s and early 2000s, the popularity of SUVs significantly increased, often at the expense of the popularity of large sedans and station wagons. SUVs accounted for 45.9% of the world's passenger car market in 2021. SUVs have been criticized for a variety of environmental and safety-related reasons. They generally have poorer fuel efficiency and require more resources to manufacture than smaller vehicles, contributing more to climate change and environmental degradation . Between 2010 and 2018, SUVs were

19118-580: The phrase, "Hey UConnect", or "Hey Jeep", and can control multiple features of the vehicle, as well as provide other pertinent information. The Grand Cherokee L went on sale in June 2021. Its wheelbase is 6.9 inches (175 mm) longer than the previous generation two-row model, and 5 inches (127 mm) longer than its two-row counterpart. It is equipped with an independent front and multi-link rear suspension. It arrived in Mexico in September 2021, offered only in

19276-421: The plant in Graz, Austria, were given the vehicle designation of "WG". The WK Grand Cherokee debuted in 2004 for the 2005 model year at the 2004 New York International Auto Show with available Quadra-Drive II four-wheel drive, rear-seat DVD player and optional 5.7 L Hemi V8. The 3.7 L V6 engine replaced the 4.0 L straight-6 . A Mercedes-Benz -sourced 3.0 L V6 Common Rail Diesel (CRD)

19434-537: The platform of a subcompact (also called supermini or B-segment) passenger car. The "compact SUV" is the next bigger-size class after mini SUVs. Many recent vehicles labeled as compact SUVs are technically compact crossovers and are built on the platform of a compact (C-segment) passenger car. The next larger size is called the "mid-size SUV". Some mid-size SUVs are based on platforms shared with passenger cars and therefore, are crossovers. Other mid-size SUVs are based on compact or mid-size pickups. Full-size SUVs are

19592-444: The pressure plate ( clutch engaged – the clutch pedal is not being pressed) or not connected to the engine ( clutch disengaged – the clutch pedal is being pressed down). When the engine is running and the clutch is engaged (i.e., clutch pedal up), the flywheel spins the clutch pressure plate and hence the transmission. The design of most manual transmissions for cars is that gear ratios are selected by locking selected gear pairs to

19750-487: The previous model Grand Cherokee. The interior was also completely redesigned. The redesign allowed for larger rear doors, and more space for rear passengers. Controls for various items like headlights, heated seats, and rear wiper were moved to more convenient locations. The electronic Vehicle Information center was moved from below the radio to above the windshield and was standard on 2000–2004 models. Limited models included automatic dual-zone climate control. A 10-CD changer

19908-486: The purpose of requesting a federal loan. This culminated in the Chrysler Chapter 11 reorganization that same year. Like previous generations, the WK2 Grand Cherokee chassis is a steel unibody . Unlike previous generations, it features four-wheel independent suspension for better on-road handling. The WK2 and 2011 Durango use a Chrysler-designed and engineered platform/chassis that Mercedes-Benz later used for

20066-505: The rear axle starts spinning at a higher rate than the front axle, hydraulic pressure builds up in the gerotor and causes the clutch pack to progressively transfer torque to the front axle until both axles return to the same speed. A neutral mode is intended for towing the vehicle. In 4-Lo, the front and rear axles are locked together through a 2.72 reduction gear ratio. The NV247 transfer case is mated to front and rear axles containing Jeep's Vari-Lok differentials. Vari-Lok differentials also use

20224-562: The recall, agreeing to recall 2.7 million Jeeps, though eliminating both the 1986–2001 Jeep Cherokee (XJ) and 1999–2004 Jeep Grand Cherokee WJ from the recall. The recall will include 2.7 million 1993–1998 Jeep Grand Cherokee ZJ and 2002–2007 Jeep Liberty KJ vehicles. Two weeks prior to this recall, Chrysler Corporation claimed that the affected Jeep vehicles were safe, citing the vehicles' rates of fatal rear-impact crashes involving fire as well as their compliance with then-current requirements of FMVSS standard No. 301, though agreed to recall

20382-545: The recall, the market for these Jeep vehicles has not suffered. In May 2013 there was a recall of WKs with the Quadra-Drive II and Quadra-Trac II systems. This followed cases of cars rolling away due to the transfer case moving into neutral of its own accord, and the owner not having applied the parking brake. The recall revised the Final Drive Control Module (FDCM) software. However, following

20540-450: The recall, there were widespread reports on enthusiast websites of both the neutral and low ratio modes of the transfer case ceasing to function, and a survey showed that fewer than 10% of respondents had experienced no issues with the recall. Attempting to resolve these issues, some dealers subsequently replaced the transfer case actuator, FDCM, and even the transfer case itself, often at customer expense and usually to no avail. The cause of

20698-406: The roll-aways was faulty soldering in the transfer case actuator. It has been deduced that the revised software detects this by noting any deviation in resistance, and thereupon locks the transfer case in the high ratio for safety; but that it is overreacting to minor resistance variations from other causes. Originally Chrysler dealers claimed that the loss of neutral and low ratio following the recall

20856-401: The same axis, since this reduces the torsional forces to which the transmission casing must withstand. The assembly consisting of both the input and output shafts is referred to as the main shaft (although sometimes this term refers to just the input shaft or output shaft). Independent rotation of the input and output shafts is made possible by one shaft being located inside the hollow bore of

21014-441: The same speed when engaged; otherwise, the teeth would refuse to mesh. This was difficult to achieve, so gear changes were often accompanied by grinding or crunching sounds, resulting in the gearboxes being nicknamed "crash boxes". Even after passenger cars had switched to synchronous transmissions (i.e. with synchronizers), many transmissions for heavy trucks, motorcycles and racing cars remained non-synchronous, in order to withstand

21172-502: The seats and rear hatches for cargo area access. Just before and during World War II , prototypes and low-volume production examples of military cars with sedan or station wagon-type bodies and rugged, off-road capable four-wheel drive chassis began to appear around the world. These early models included the 1936 Kurogane Type 95 from Japan, the 1938 GAZ-61 from Russia as well as the 1941 Volkswagen Kommandeurswagen and 1936 Opel Geländesportwagen from Germany. An early predecessor to

21330-512: The second largest contributor to the global increase in carbon emissions worldwide. The "crossover SUV" segment (also known as "CUVs" or simply "crossovers") has become increasingly popular since around 2010. Crossovers are often based on a platform shared with a passenger car, as a result, they typically have better comfort and fuel economy, but less off-road capability (many crossovers are sold without all-wheel drive) than pickup truck-based SUVs. The difference between crossovers and other SUVs

21488-435: The second-largest contributor to the global increase in carbon emissions worldwide. Their higher center of gravity increases their risk of rollovers . Their higher front-end profile makes them at least twice as likely to kill pedestrians they hit. Additionally, the psychological sense of security they provide influences drivers to drive less cautiously, and may in-turn, cause others with smaller vehicles to opt for SUVs in

21646-422: The selector forks within the transmission. Motorcycles typically employ sequential manual transmissions , although the shift pattern is modified slightly for safety reasons. Gear selection is usually via the left-foot (or, on older motorcycles; right-foot) shift lever with a layout of 1–N–2–3–4–5–6. During the period when U.S. vehicles usually had only three forward speeds, the most common gear-shifter location

21804-436: The smallest U.S. automaker was looking for a way to speed up its product development process to compete better against its larger competitors. The XJC's development was aided by computer-aided design (CAD) software systems making the engineers more productive. Meanwhile, new communication systems allowed potential conflicts to be resolved faster, thus reducing costly engineering changes, because all drawings and documents were in

21962-483: The standard open front and rear differentials. The 45RFE and 545RFE automatic transmission in the WJ was notable. It included three planetary gear sets rather than the two normally used in a four-speed automatic. This gave it six theoretical speeds, and it would have been the first six-speed transmission ever produced in volume, but it was programmed to only use five of these ratios. Four were used for upshifts, with

22120-459: The structure, they enhanced the ride and strengthened the network of steel beams, rails and pillars (or "safety cage") that surround and protect occupants. More than 70 percent of the underbody is high-strength steel. All Jeep Grand Cherokees feature UniFrame construction. The Grand Cherokee received a minor facelift for 2004 including round fog lamps, a lower front fascia , and a new body color-matched inset grille design. Export models produced at

22278-424: The term varies between countries. Thus, it is "a loose term that traditionally covers a broad range of vehicles with four-wheel drive." Some definitions claim that an SUV must be built on a light truck chassis; however, broader definitions consider any vehicle with off-road design features to be an SUV. A crossover SUV is often defined as an SUV built with a unibody construction (as with passenger cars); however,

22436-403: The terms "4x4" (pronounced "four-by-four"), "jeep", four wheel drive, or "off-road vehicle" are generally used instead of "sport utility vehicle". The sardonic term "Chelsea tractor" is also commonly used, due to the perceived popularity of the vehicles with urban residents of Chelsea, London , and their likeness to vehicles used by farmers. However, in the 2020s, the term SUV has entered usage in

22594-533: The three-row LWB version, Grand Cherokee L on January 7, 2021. The two-row version was revealed on September 30, 2021. The Grand Cherokee L is assembled at the new Mack Avenue Assembly Complex, which is built on the grounds of the Mack Avenue Engine Complex in Detroit, Michigan . The two-row Grand Cherokee will continue to be assembled at the nearby Jefferson North Assembly Plant , where it has been assembled since its introduction in 1992 for

22752-484: The transmission. FF (front-engined, front-wheel drive) vehicles, RR (rear-engined, rear-wheel drive) vehicles and front-engined vehicles with rear-mounted gearboxes often require a mechanical linkage to connect the shifter to the transmission. Some vehicles have a gear lever mounted on the steering column. A 3-speed column shifter, which came to be popularly known as a "three on the tree", began appearing in America in

22910-576: The two-door models as the four-door models became more popular. A few two-door SUVs remain available, such as the body-on-frame Suzuki Jimny , Mahindra Thar , Toyota Land Cruiser Prado , Ford Bronco , and Jeep Wrangler as well as the Range Rover Evoque crossover SUV. SUVs typically have high ground clearance and a tall body. This results in a high center of mass , which made SUVs more prone to roll-over accidents . In 2003, SUVs were quoted as 2.5 times more likely to roll over in

23068-401: The vehicle did roll over, SUV occupants in the early 2000s were nearly three times as likely to be killed as other car passengers. Vehicles with a high center of gravity do sometimes fail the moose test of maneuverability conducted by Swedish consumer magazine Teknikens Värld , for example, the 1997 Mercedes-Benz A-Class and 2011 Jeep Grand Cherokee . The increasing popularity of SUVs in

23226-467: The vehicle's transmission in much the same way a floor-mounted shifter can. However, because of the location of the gear shifter in comparison to the locations of the column shifter and the floor shifter, as well as the positioning of the shifter to the rest of the controls on the panel often require that the gearshift be mounted in a space that does not feature a lot of controls integral to the vehicle's operation, or frequently used controls, such as those for

23384-412: Was a coincidence; then it claimed that the revised software was revealing pre-existing faults in the system, despite it occurring even with new parts. Chrysler has also claimed that only a small fraction of cars have issues following the recall; but most users never have occasion to use the low ratio and may never discover the fault. Four years after this recall its issues remain unresolved. In April 2016,

23542-485: Was also available with the Infinity Audio package. In addition to Jeep's UniFrame construction, Daimler Chrysler partnered with Porsche to further strengthen the frame. This was done to reduce Noise Vibration Harshness (NVH). UniFrame is an unusual construction scheme, it incorporates all of the strength and durability of a body-on-frame construction into a unitized construction. By adding stiffness and rigidity to

23700-761: Was available outside of North America from launch. Jeep replaced the XJ-era leading-arms live-axle front suspension (found in the ZJ and WJ) with an independent double-wishbone setup like that which debuted in the 2002 Liberty . Classed as a truck-based SUV, the WH/WK Grand Cherokee offers "crossover" refinement, capability, and NVH. The 2007 Jeep Grand Cherokee made its European debut at the Euro Camp Jeep in Ardèche , France. This Jeep has gained 4 stars in

23858-475: Was first introduced in April 1992 as an early 1993 model year vehicle, the Grand Cherokee only had one powertrain choice: the 4.0 L AMC -derived straight-six engine that made 190 horsepower (193 PS; 142 kW). This became the "volume" engine for the Grand Cherokee. Transmission choices included a four-speed automatic transmission (early production ZJs used the AW4—the A500SE (later 42RE) replaced

24016-452: Was found. The vehicles also deliver warning chimes and alert messages if their driver-side doors are opened while their engines are still running and "PARK" is not engaged. However, the investigation suggested these measures may be insufficient to deter some drivers from exiting their vehicles without selecting "PARK," so FCA US will enhance the warnings and transmission-shift strategy on these vehicles. The enhancements will combine warnings with

24174-466: Was introduced in the 2012 Porsche 911 (991) . In 2008, 75.2% of vehicles produced in Western Europe were equipped with manual transmission, versus 16.1% with automatic and 8.7% with other. A manual transmission has several shafts with various gears and other components attached to them. Most modern passenger cars use 'constant-mesh' transmissions consisting of three shafts: an input shaft ,

24332-461: Was on the steering column, a layout that was sometimes called "three on the tree". By contrast, high-performance cars, and European vehicles in general, mostly used a four-speed transmission with floor-mounted shifters. That layout was referred to as "four on the floor". Most FR (front-engined, rear-wheel drive) vehicles have a transmission that sits between the driver and the front passenger seat. Floor-mounted shifters are often connected directly to

24490-445: Was relocated from the side of the cargo compartment to under the floor. (Like the 1998MY ZJ, the rear tailgate glass opened separately.) The two heavy pushrod V8 engines were replaced by Chrysler's then-new PowerTech . The new V8 engine produced less torque than the old pushrods, but was lighter, offered better fuel economy, and provided similar on-road performance figures (the 23-US-gallon (87 L; 19 imp gal) fuel tank

24648-472: Was replaced with one of a 20.5-US-gallon (78 L; 17.1 imp gal) capacity). The straight-six engine was also updated. A redesign of the intake manifold added 10 horsepower (10 PS; 7 kW). While other Jeep vehicles used the Mopar 5 × 4.5 bolt circle, this was the first Jeep following the 1987 Chrysler buyout to receive a wider bolt pattern—5 × 5. A notable feature available in this generation

24806-506: Was the automatic four-wheel drive option called Quadra-Drive , which employed the New Venture Gear NV247 transfer case. This two-speed chain-driven transfer case uses a gerotor , a clutch pack coupled to a hydraulic pump, to transfer torque between the front and rear axles. The transfer case contains three modes, 4-All Time, Neutral, and 4-Lo. In 4-All Time, 100% of torque is sent to the rear axle in normal conditions. If

24964-463: Was the mid-scale model with standard features that included power windows , power door locks , cruise control, and a leather-wrapped steering wheel. Exterior features included medium-grey plastic paneling on the lower body and five-spoke alloy wheels. The Limited was the premium model, featuring body-color lower body paneling, and gold exterior accents. The Limited also boasted standard features such as leather seating, heated mirrors, front power seats,

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