|Chevrolet and GMC C/K|
|Also called||GMC C/K|
|Production||1959–2002 (United States)|
1986–1991 (Argentina by Sevel)
|Body and chassis|
|Class||Full-size pickup truck|
|Successor|| Chevrolet Silverado/GMC Sierra (pickup trucks)|
Chevrolet Kodiak/GMC TopKick (medium-duty trucks)
C/K is a series of trucks that were manufactured by General Motors from the 1960 to 2002 model years. Marketed by both the Chevrolet and GMC divisions, the C/K series encompassed a wide range of vehicles. While most commonly associated with pickup trucks, the model line also included chassis-cab trucks and medium-duty trucks and served as the basis for GM full-size SUVs. Through its entire production, the model line competed directly against the Ford F-Series and the Dodge D series (later the Dodge Ram pickup).
Used for both the model branding and the internal model code, "C" denoted two-wheel drive; "K" denoted four-wheel drive. Four generations of the model line were produced, including the second-generation "Action Line" and third-generation "Rounded Line" vehicles. GMC marketed its version of the fourth-generation C/K pickup truck under a singular GMC Sierra nameplate. The C/K was manufactured for South America by General Motors Brazil, who produced variants of the model line for Brazil, Argentina, and Chile.
For 1990, GM ended production of medium-duty C/K trucks, replacing them with the Chevrolet Kodiak/GMC TopKick. For 1999, the C/K was replaced with the Chevrolet Silverado; in line with the GMC Sierra, Chevrolet consolidated its full-size pickup trucks under a singular nameplate. Initially marketed with its successor, the final C/K pickup trucks were produced after the 2000 model year. From 2001 to 2002, the final vehicles of the C/K model line were heavy-duty chassis cab trucks.
– C40 to C80 (medium- & heavy-duty models)
– 3000 to 6500 (medium- & heavy-duty models)
|Assembly|| Pontiac West Assembly, Pontiac, Michigan |
Buenos Aires, Argentina
|Designer||Harley Earl (1957, 1958)|
|Body and chassis|
|Transmission||3-speed synchromesh manual|
4-speed synchromesh manual
2-speed Powerglide automatic
|Wheelbase||115 in (2,921 mm) (short box: ½-ton models) |
127 in (3,226 mm) (long box: ½-ton & ¾-ton models)
133 in (3,378 mm) (1-ton models)
|Length||186.875 in (4,747 mm) SWB |
206 in (5,232 mm) Standard
216.25 in (5,493 mm) LWB
|Width||78.75 in (2,000 mm)|
|Height||71.25 in (1,810 mm)|
Launched in the fall of 1959, the 1960 model year introduced a new body style of light pick-up truck that featured many firsts. Most important of these were a drop-center ladder frame, allowing the cab to sit lower, and independent front suspension, giving an almost car-like ride in a truck. Also new for 1960 was a new designation system for trucks made by GM. Gone were the 3100, 3200, and 3600 designations for short 1/2, long 1/2 and 3/4-ton models. Instead, a new scheme assigned a 10, 20, or 30 for 1/2, 3/4, and 1-ton models. Since 1957, trucks were available from the factory as four-wheel drive, and the new class scheme would make this known. A C (conventional) in front of the series number designates two-wheel rear drive while a K designates four-wheel drive.
Actual badging on Chevrolet trucks carried the series name system from the previous generation for 1960 and 1961: the 10, 20, 30, and 40 series (C and K) were badged as "Apaches", 50 and 60 series trucks were badged as "Vikings", and the largest 70 and 80 series models were marked "Spartans". For 1960, C/K trucks were available in smooth "Fleetside" or fendered "Stepside" versions. GMC called these "Wide-Side" and "Fenderside". Half-ton models were the C10 and K10 long-bed and short-bed trucks, and The 3/4-ton C20 and K20, as well as the one-ton C30, were also available. GMC did not use the "C" nomenclature, though their 4x4 versions used the "K" nomenclature. GMC model numbers for 1/2, 3/4, 1, and 1.5 ton were 1000, 1500, 2500, and 3000. The 1.5 ton Chevrolet C40 and GMC 3000, which were using the light-duty cab(but only as chassis-cab and stake models), were discontinued for the 1963 model year.
The 1960, 1961, and 1962 models featured ball bearing front hubs,with torsion bar front suspensions, with trailing arm suspension rears. Trim lines were base and "Custom". Engines included the base 305 cu in (5.0 L) GMC V6 for the GMC version, 135 hp (101 kW)236 cu in (3.9 L) and 150 hp (112 kW)261 cu in (4.3 L) straight-six engines, and a 283 cu in (4.6 L) V8 with 185 hp (138 kW).
A coil-spring front suspension came in 1963, with roller bearing front hubs, along with a new base engine, a 140 hp (104 kW)230 cu in (3.8 L) I6, and an optional 165 hp (123 kW)292 cu in (4.8 L) I6. The cab was modified for 1964, with elimination of the "wraparound" windshield and a new front grille design, along with various interior changes, while retaining the original design on the body. Air conditioning and a 220 hp (164 kW)327 cu in (5.4 L) V8 came in 1965. A new base engine arrived in 1966, being a 155 hp (116 kW)250 cu in (4.1 L) Chevrolet straight-six.
Medium-duty trucks were:
Heavy-duty trucks were:
|Second generation (Action Line)|
|Body and chassis|
|Platform||GM C/K (Action Line)|
|Related|| Chevrolet K5 Blazer/GMC Jimmy |
Chevrolet Suburban/GMC Carryall
The second-generation C/K was introduced for the 1967 model year. Designated the "Action Line" generation by General Motors, the C/K largely carried over its drop-center ladder frame and its coil-sprung rear axle, but the body was redesigned from the ground up to improve its capability as a multi-purpose vehicle. Alongside a utilitarian vehicle intended for work or farm use, the C/K was also offered with optional features carried over from Chevrolet sedans, including automatic transmissions, AM/FM radio, carpet, and two-tone paint.
While the Action Line would not undergo a definitive model revision through its production, the series underwent gradual changes on a biannual basis.The drivetrain line underwent multiple revisions, as a large-block V8 was offered for the first time in 1968. After 1969, GM switched entirely to Chevrolet-produced engines for C/K pickup trucks.
This generation marks the debut of the Chevrolet Cheyenne and GMC Sierra nameplates; introduced in 1971 and 1972, respectively, General Motors still uses both nameplates for full-size pickups in current production. The Action-Line pickup also served as the basis of ancestors of modern full-size SUVs, including the Chevrolet K5 Blazer, an open-body off-road vehicle, and the Chevrolet Suburban truck-based station wagon.
For 1973, GM replaced the Action Line trucks with the long-running Rounded Line series; the Action Line trucks are the final C/K trucks offered solely with a two-door cab.
|Third generation (Rounded Line)|
|Also called||Chevrolet/GMC R/V series|
|Body and chassis|
|Platform||GM C/K (Rounded Line)|
|Related|| Chevrolet K5 Blazer/GMC Jimmy |
The third-generation C/K was introduced for the 1973 model year. Designated the "Rounded Line" generation by General Motors, the C/K grew in size inside and out. As pickup trucks increased in use as personal vehicles, cab features and options moved closer in line with GM sedans (with power windows and power door locks becoming options). To further expand its practicality, a four-door crew cab body was introduced (offering 6-passenger seating).
While relatively straight-lined and boxy in appearance (leading to their "Square-body" nickname from the public) the Rounded Line trucks were the first generation of the C/K to be designed with the use of computers and wind tunnels, optimizing the exterior shape for lower drag and improved fuel economy. The chassis was an all-new design (with all trucks receiving a leaf-spring rear suspension); K-Series trucks moved to all-wheel drive (shift-on-the-fly 4x4 was introduced for 1981).
Alongside the introduction of the four-door crew cab, the third generation C/K marked the introduction of a dual rear-wheel pickup truck ("Big Dooley"). For 1978, the C/K became the first American full-size pickup truck sold with a diesel engine (a 5.7L Oldsmobile diesel V8); a 6.2L V8 diesel was introduced for 1982. This generation also marks the first use of the Chevrolet Silverado nameplate (in use for Chevrolet full-size trucks today).
The Rounded Line generation is the longest-produced version of the C/K model line, produced for 18 model years. For 1987, it was renamed the R/V series (to accommodate the fourth-generation C/K marketed alongside it) and was gradually phased out through the 1991 model year.
|Fourth generation (GMT400)|
|Body and chassis|
|Platform||GM GMT400 platform|
|Related|| Chevrolet/GMC Suburban |
Chevrolet K5 Blazer/Chevrolet Tahoe/GMC Yukon/Cadillac Escalade
The fourth-generation C/K was introduced in April 1987 for the 1988 model year. The first line not assigned a generational moniker by General Motors, it is known by its GMT400 internal codename. Slightly smaller in cab dimensions than the Rounded Line generation, the fourth-generation C/K increased interior space over its predecessor. After trailing Ford and Dodge by over a decade, GM introduced the C/K in an extended-cab configuration. For nearly five years, the fourth-generation C/K was sold alongside its R/V series predecessor, as the crew cab pickup (which served as the basis of the Suburban SUV) was not released until the 1992 model year.
In a branding change, the C/K nomenclature became exclusive to Chevrolet, as all GMC pickups became Sierras (GMC retained the C/K nomenclature for its internal model codes). Chevrolet introduced several specialized variants of the C/K series, including the work-oriented W/T 1500, off-road Z71, and the high-performance 454SS. Between one-ton trucks and medium-duty trucks, Chevrolet and GMC offered the C3500HD chassis cab for commercial use.
For 1995, the fourth-generation C/K underwent a mid-cycle revision, adding a driver-side airbag (dual airbags became standard for 1998). For 1996, the extended cab was redesigned, adding a rear-hinged passenger-side third door.
For the 1999 model year, to accommodate the introduction of the GMT800-chassis Chevrolet Silverado/GMC Sierra, the fourth-generation C/K was renamed as the Chevrolet Silverado Classic and GMC Sierra Classic. After the 2000 model year, C/K pickup trucks were discontinued. GM produced the heavy-duty C3500HD chassis cab as the final version of the C/K model family through the 2002 model year.
General Motors Brazil produced three generations of light-duty Chevrolet pickup trucks from 1964 to 2001. Developed specifically for South American production, each version was also derived (to various extents) from the contemporary version of its American C/K counterpart. The model line also included truck-based station wagon/SUVs (similar to the Chevrolet Suburban).
In January 2002, GM Brazil ended production of full-size pickup trucks, concentrating its production towards the Chevrolet S-10 and car-based pickup trucks.
In 1964, GM Brazil launched its first line of light trucks designed in Brazil, the Chevrolet C-series pickup truck; in line with the Chevrolet Suburban, the model line was sold in a wagon configuration, renamed from C-1416 to Chevrolet Veraneio in 1969.Styled with an exterior exclusive to Brazil, the model line shared its instrument panel with the first-generation Chevrolet C/K of 1960-1966. Nearly a decade before its American counterpart, a four-door "double cab" was offered alongside the standard two-door configuration, sharing its doors with the Veraneio wagon/SUV.
The model line was launched with a 261 cubic-inch inline-six (derived from the Chevrolet "Stovebolt" engine); this engine was replaced in 1971 by a 250 cubic-inch inline-6 from the Chevrolet Opala. L inline-six becoming offered in gasoline and ethanol-fuel versions (C-10 and A-10); the sole diesel was now a 5.8 L Perkins inline-six.In 1976, the standard gasoline engine for the C-10 became a 2.5L inline-four. The first diesel-powered Chevrolet in Brazil, the D-series pickup introduced a Perkins 5.6L inline-6 diesel in 1965; a four-cylinder diesel (Perkins Q20B) was introduced for 1978. From 1977 to 1980, the Detroit Diesel 4-53 two-cycle inline-four diesel was also offered as an option. For 1981, the engine line was reduced to two, with a 4.8
For 1985 production, GM Brazil introduced the 20-series model line as its second generation of light trucks. Sharing its cab structure with the "Rounded Line" generation, the 20-series received its own front fascia (sharing headlights with the Opala) and larger taillamps than its American counterpart. Far more advanced in design than its utilitarian predecessor, the 20-series carried over little more than its powertrains from the previous generation.In addition to 20-series pickup trucks, GM Brazil offered a full line of Chevrolet medium and heavy-duty trucks derived from the "Rounded Line" cab.
Again offered in single and double cabs (introduced in 1986), the C-20 and A-20 (ethanol) received a 4.1L inline-six, with the D-20 receiving the Perkins Q20B inline-4 diesel (replaced by the Maxion S4 for 1990). In contrast to its American counterpart, the 20-series was offered nearly exclusively with 2-wheel drive; a 4x4 version was offered for 1989 and was withdrawn before the end of the model year, following poor reliability of its drivetrain.
For 1988, the Veraneio wagon/SUV was redesigned for the first time since its introduction, adopting the 20-series body structure; the four-door was joined by the two-door Chevrolet Bonanza. With the exception of its taillamps and front fascia, the Veraneio adopted an appearance close to the Chevrolet/GMC Suburban; the Bonanza was proportioned similar to the Chevrolet K5 Blazer (though fitted with two-wheel drive and a permanent roof).
For 1992, the 20-series underwent a minor exterior revision, again sharing its headlights with the Opala (higher-trim vehicles shared wheels with GMT400 pickup trucks); the interior underwent a redesign, adopting a redesigned instrument panel.
For 1996, the model line adopted the fuel-injected 4.1L six from the Chevrolet Omega, ending its use of carbureted engines.
For 1997, the 20-series (based on the 1973 "Rounded Line" pickups) was retired, with GM Brazil introducing the Argentine-produced Chevrolet Silverado. In contrast to the previous two generations of Brazilian Chevrolet trucks, the Chevrolet Silverado was no longer a market-exclusive design; the Silverado was identical to the American-market GMT400 pickup. Offered only as a two-door C2500 with a standard-length bed, the Silverado was fitted with locally-sourced powertrains, including a 138 hp 4.1L inline-6 (from the previous C-20/A-20 and the Chevrolet Omega) and a MWM-produced 168 hp 4.2L turbodiesel inline-6.
The locally-designed Veraneio and Bonanza were discontinued; in 1998, GM Brazil began production of the Chevrolet Grand Blazer, a renamed Chevrolet Tahoe.
For 2000 production, production of the Silverado shifted from Argentina to Brazil.Alongside the withdrawal of the Grand Blazer (in favor of the smaller S-10 Blazer), the Silverado adopted a D-20 suffix (from the popularity of its predecessor ). During 2001, Chevrolet withdrew the 4.1L gasoline six from the Silverado D-20 (the final vehicle to use the engine).
After many years of declining market share in the truck segment, GM Brazil produced the final Silverado D-20 in January 2002.
The Chevrolet S-10 is a compact pickup truck that was produced by Chevrolet. It was the first domestically built compact pickup of the big three American automakers. When it was first introduced as a "quarter-ton pickup" in 1981 for the 1982 model year, the GMC version was known as the S-15 and later renamed the GMC Sonoma. A high-performance version was released in 1991 and given the name of GMC Syclone. The pickup was also sold by Isuzu as the Hombre from 1996 through 2000, but only in North America. There was also an SUV version, the Chevrolet S-10 Blazer/GMC S-15 Jimmy. An electric version was leased as a fleet vehicle in 1997 and 1998. Together, these pickups are often referred to as the S-series.
The Chevrolet Silverado is a range of trucks manufactured by General Motors under the Chevrolet brand. Introduced for the 1999 model year, the Silverado is the successor to the long-running Chevrolet C/K model line. Taking its name from the top trim level from the Chevrolet C/K series, the Silverado is offered as a series of full-size pickup trucks, chassis cab trucks, and medium-duty trucks. The fourth generation of the model line was introduced for the 2019 model year.
The Chevrolet straight-six engine was an inline-6 engine made in three versions between 1929 and 1988 by the Chevrolet Division of General Motors. It replaced the Chevrolet Straight-4 engine171-cubic-inch (2.8 L) inline-four as the maker's sole engine from 1929 through 1954, and was the company's base engine starting in 1955 when it added the small block V8 to the lineup. It was completely phased out in North America by 1990; in Brazil, GM held on to its fuel-injected version through the 1998 model year. It was replaced by more recently developed V6 and four-cylinder engines. Chevrolet did not offer another inline-six until the 2002 General Motors Atlas engine's debut in the Chevrolet TrailBlazer.
The Duramax V8 engine is a family of 6.6-liter Diesel V8 engines produced by DMAX, a joint venture between General Motors and Isuzu in Moraine, Ohio. The Duramax block and heads are poured at The Defiance GM Powertrain foundry in Defiance County, Ohio. This engine was initially installed in 2001 Chevrolet and GMC trucks, and has since become an option in pickups, vans, and medium-duty trucks. In 2006, production at Moraine was reportedly limited to approximately 200,000 engines per year. On May 9, 2007, DMAX announced the production of the 1,000,000th Duramax V8 at its Moraine facility, followed by the 2,000,000th on March 24, 2017.
The Chevrolet Suburban is a full-size SUV from Chevrolet. The name started in 1934 for the 1935 U.S. model year, making it the longest continuously used automobile nameplate in production. It has traditionally been one of General Motors' most profitable vehicles. The 1935 first generation Carryall Suburban was one of the first production all-metal bodied station wagons. It now comes with three engine options: a 5.3 liter V8, 6.2 liter V8 or a 3.0 liter Inline-6 turbo diesel.
The Chevrolet Express is a range of full-size vans from General Motors. The successor of the Chevrolet Van, the Express is also sold through by the GMC division as the GMC Savana. Introduced for the 1996 model year, a single generation of the model line has been produced since 1995, serving as one of the longest-produced automotive designs in American automotive history.
Flint Truck Assembly is an automobile factory operated by General Motors in Flint, Michigan. It is the city's only main plant after the closure of Buick City. The Flint factory currently produces full-size GM pickup trucks. Engine block and cylinder heads were cast at Saginaw Metal Casting Operations, internal engine components were created at Bay City Powertrain and the engines were then assembled at Tonawanda Engine and Romulus Engine. For most of the 20th century Flint Assembly was the main plant for all Chevrolet vehicles.
The Chevrolet and GMC B series was a series of cowled chassis that were produced by General Motors. Produced across three generations from 1966 to 2003, the model line was a variant of medium-duty trucks marketed under the Chevrolet and GMC nameplates. Initially derived from the medium-duty C/K series, later examples were derived from the GMT530 architecture.
General Motors introduced a line of Diesel V8 engines for their C/K pickup trucks in 1982. This engine family was produced by GM through 2000, when it was replaced by the new Duramax line. AM General's subsidiary General Engine Products (GEP) still produces a military variant of this engine for the HMMWV.
The Chevrolet Kodiak and GMC TopKick are a range of medium duty trucks that were produced by the Chevrolet and GMC divisions of General Motors from 1980 to 2009. Introduced as a variant of the medium-duty C/K truck line, three generations were produced. Slotted between the C/K trucks and the GMC Brigadier Class 8 conventional, the Kodiak/TopKick were developed as a basis for vocationally-oriented trucks, including cargo haulers, dump trucks, and similar vehicles; on later generations, both cutaway and cowled-chassis variants were produced for bus use.
The GMT800 was a General Motors full-size truck platform used from the 1999 through 2006 model years. It is the foundation for the Chevrolet Silverado and GMC Sierra pickups; and the derivative GMT820 and GMT830 versions for the Chevrolet Tahoe/GMC Yukon and the Chevrolet Suburban/GMC Yukon XL full-size SUVs, respectively. This platform was the successor to the GMT400 series of C/K pickups and SUVs, and was replaced for 2007 by the GMT900 line.
The medium-duty version of the Ford F-Series is a range of commercial trucks manufactured by Ford since 1948. Derived from the smaller F-Series pickup trucks, the medium-duty range is currently in its eighth generation. Initially slotted between the F-Series pickup trucks and the "Big Job" conventionals, later generations were slotted below the L-Series "Louisville" trucks; the last two generations are the largest vehicles produced by Ford since its exit from the heavy-truck segment.
The Isuzu Elf is a medium duty truck produced by Isuzu since 1959. Outside Japan it is known as N series. The range was originally mainly available in Japan and other Asian countries. Australia was another important market for the Elf and N series – to the extent that it was manufactured there from the 1970s using many local components. Since the early 1980s, it has also been sold and built in the United States, and also as the Isuzu N-Series. North America only receives the wide-cab version.
The GMC Brigadier is a series of heavy-duty trucks that were assembled by the GMC Truck and Coach Division of General Motors. The second generation of the H/J-series heavy-duty conventionals, the Brigadier was produced from 1978 to 1989. Slotted between the largest medium-duty C/K trucks and the GMC General, the Brigadier was a Class 7-8 short-hood conventional similar to the Ford L-Series and Mack Model R. Configured in both straight truck and semi-tractor layouts, the Brigadier saw use in short-haul, vocational, and severe-service applications.
The Isuzu Faster is a pickup truck that was manufactured and marketed by Isuzu between 1972 and 2002 over three generations. The Faster was succeeded worldwide by Isuzu D-Max, except in North America.
The Chevrolet Van is a range of vans that was manufactured by General Motors from the 1964 to 1995 model years. Introduced as the successor for the rear-engine Corvair Corvan/Greenbrier, the model line also replaced the panel van configuration of the Chevrolet Suburban. The model line was sold in passenger van and cargo van configurations as well as a cutaway van chassis that served as the basis for a variety of custom applications.
GMT K2XX is an assembly code for a vehicle platform architecture developed by General Motors for its line of full-size trucks and large SUVs that started production with the 2014 model year. The "XX" is a place holder for the last two digits of the specific assembly code for each model. The platform, which replaced the GMT900 series that had been in production from 2007 to 2013, was introduced in April 2013 for the 2014 Model Year on the trucks, followed by the December 2013 production on the 2015 large SUVs that debuted in February 2014. The GMT K2XX products are being produced at four GM assembly plants: Arlington, Flint, and Fort Wayne in the United States, along with Silao Assembly in Mexico for the crew cab light duty pickups.
The second generation of the C/K series is a range of trucks that was manufactured by General Motors. Marketed by both the Chevrolet and GMC divisions from the 1967 to 1972 model years, this generation was given the "Action Line" moniker by General Motors. As with its predecessor, the second generation C/K included full-size pickup trucks, chassis cab trucks, and medium-duty commercial trucks.
The third generation of the C/K series is a range of trucks that was manufactured by General Motors. Marketed under the Chevrolet and GMC brands from the 1973 to the 1991 model years, this generation is the longest-produced version of the C/K model line. Adopting the "Rounded Line" moniker by General Motors, the third-generation C/K is the second longest-produced generation of American pickup trucks.
The fourth generation of the C/K series is a range of trucks that was manufactured by General Motors. Marketed by the Chevrolet and GMC brands from the 1988 to the 2000 model years, this generation is the final version of the C/K model line. The C/K nomenclature itself became exclusive to Chevrolet, with the GMC division applying the GMC Sierra nameplate across its entire full-size pickup truck line. Internally codenamed the GMT400 platform, the fourth generation C/K was not given a word moniker. After its production, the model line would informally become known by the public as the "OBS", in reference to its GMT800 successor.
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|Note||Sourced from Opel and Vauxhall Sourced from Daewoo/GM Korea Sourced from Holden Sourced from Suzuki Sourced from Isuzu Sourced from SAIC-GM-Wuling Sourced from other manufacturer|
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