A | B | C | D | E | F | G | H | CH | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z | 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9
GM C platform (FWD) | |
---|---|
![]() 1991-1996 Buick Park Avenue | |
Overview | |
Manufacturer | General Motors |
Also called | C-Body |
Production | 1985–1996 |
Body and chassis | |
Class | Full-size car |
Layout | Transverse FF layout |
Body style(s) | Two- and four-door sedan; extended wheelbase limousine. |
Vehicles | Buick Electra Buick Park Avenue Cadillac De Ville Cadillac Fleetwood Cadillac Series 75 Cadillac Sixty Special Oldsmobile 98 |
Related | GM H platform (FWD) GM K platform (FWD) |
Chronology | |
Successor | GM G platform |
GM C platform, also known as the C-Body, was a front wheel drive (FWD) automobile platform used by General Motors' Cadillac, Buick and Oldsmobile divisions for their full-sized automobiles from 1985 through 1996, sharing unibody construction, transverse engine configuration, rack and pinion steering and four-wheel independent suspension.
C-Bodies used, V6 or V8 engines, GM's TMH440 transaxle (initially), unibody construction — and all had been aerodynamically refined, with the Oldsmobile achieving a .383 drag coefficient.
GM's C platform and H platform were largely identical, sharing the same 110.8 in wheelbase, most bodywork, interior details, glass and engines. Manufacture began with the C platform in late 1983, first at two purpose-built plants, Wentzville Assembly and Orion Assembly — later moving to Lansing Car Assembly as well as Flint and Willow Run assembly plants.
Significantly shorter, narrower, lighter and more fuel-efficient than the platform they replaced, the C Platform vehicles were noted for having nearly the same key interior dimensions as their predecessors and a much more nearly flat passenger compartment floor[1] — albeit with thinner seats and dramatically less upper tumblehome, locating windshield as well as side glass closer to passengers.[1]
Introduced in early 1984, the models were marketed as the Oldsmobile Ninety-Eight (11th gen), Buick Electra (6th gen) and Cadillac Deville (6th gen) and Fleetwood (1985-90)..
Cadillac would later introduce C Body models with a 113.8 in wheelbase. Most C-body vehicles were ultimately replaced with cars on the related G, H, and K platform designations.
The Cadillac Series 75 limousine briefly made its return on this platform, stretched by 23.6" to a wheelbase of 134.4". Cadillac used the platform though 1993; Buick heavily revised the Electra, becoming the first generation Buick Park Avenue (1991-1996), while still using the C Platform; and Oldsmobile marketed C Platform derivatives through 1990, notably the Oldsmobile Touring Sedan.
Models using the C Platform
Years | Model | Next platform |
---|---|---|
1985–1987 | Cadillac Series 75 | - |
1985–1992 | Cadillac Fleetwood | GM D platform |
1985–1993 | Cadillac De Ville (6th Generation) | GM K platform (FWD) |
1987–1993 | Cadillac Sixty Special | - |
1985–1990 | Buick Electra (6th Generation) | - |
1991–1996 | Buick Park Avenue | GM G platform (FWD) |
1985–1996 | Oldsmobile 98 (11th generation) | |
1987–1990 | Oldsmobile Touring Sedan (subsequent 98 trim levels used a succeeding platform) |
Related H body models
The H platform and C platform were largely identical, sharing the same 110.8 in wheelbase, most bodywork, interior details, glass and engines.
Years | Model | Previous platform | Next platform |
---|---|---|---|
1986–1999 | Buick LeSabre | GM B platform | GM G platform |
1986–1999 | Oldsmobile 88/LSS | GM B platform | Retired |
1987–1999 | Pontiac Bonneville | GM G platform (RWD) | GM G platform (FWD) |
References
- ^ a b Jim Dunne (April 1984). "PS Drives GMs 85 Luxury Cars". Popular Science, April 1985.
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