GM C platform (RWD)
1977 Cadillac Coupe Deville
Overview
ManufacturerGeneral Motors
Production1925–1984
Body and chassis
ClassFull-size car
LayoutFR layout
RelatedGM D platform
GM B platform

The GM C Platform was a rear wheel drive (RWD) automobile chassis used by General Motors for its full-sized cars from 1925 through 1984. From at least 1941, when the B-body followed suit in adopting the C-body's pioneering lower and wider bodystyle, abandoning running boards, it may be viewed as a larger and more upscale brother to the GM B platform. It was also related to the limousine D platform.

With the introduction of a severely downsized front-wheel drive new GM C platform in 1985, it was redesignated as GM's D platform and continued in production for a number of Cadillac models through 1996.

Among the earlier models the C-body was used for were the Pontiac Series 24/29 Torpedo, Oldsmobile 98, the Buick Roadmaster, Super and 1958 Limited, the LaSalle Series 52, and all mid-level Cadillacs starting with the Cadillac Series 355.

Generally the C-Body was for the top-of-the-line models of multiple General Motors divisions including the Oldsmobile 98 and Buick Electra, and the base model for multiple Cadillacs, including the Series 6200 Calais, the Series 6300 de Ville, the Series 6400 Eldorado, the Series 6000 Fleetwood Sixty Special and the Fleetwood Brougham.

Use

Years Model Next platform
1925-1930Cadillac Type V-63-
1930-1935Cadillac Series 355-
1936Cadillac Series 80-
1936–1937Cadillac Series 70-
1937–1938Cadillac Series 65-
1940–1964Cadillac Series 62-
1942–1976Cadillac Sixty Special (stretched for most of its existence)GM C platform (FWD)
1948–1950Cadillac Series 61-
1959–1966Cadillac EldoradoGM E platform
1959–1984Cadillac De VilleGM C platform (FWD)
1965–1976Cadillac Calais-
1977–1984Cadillac Fleetwood BroughamGM D platform (1985)
1940LaSalle Series 52-
1936–1958Buick RoadmasterGM B platform
1940–1958Buick Super-
1958Buick Limited-
1959–1984Buick ElectraGM C platform (FWD)
1971–1976Buick EstateGM B platform
1940–1984Oldsmobile 90, 96 and 98GM C platform (FWD)
1971–1976Oldsmobile Custom CruiserGM B platform
1940–1941Pontiac Series 24/29 Torpedo-
1971–1976full-sized Pontiac Safari, and Pontiac Grand SafariGM B platform
1971–1976Chevrolet Townsman/Brookwood/Kingswood/Kingswood EstateGM B platform

References

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