GM C platform

1991 Buick Park Avenue Ultra

The General Motors C platform (commonly called C-body) was a full-size car automobile platform produced until 1996.

It was similar to the GM B platform in its rear-wheel drive era (vehicles produced were upscale luxury cars as opposed to the stripped-down cars usually common with the GM B platform), and the GM H platform in front-wheel drive, with both the H-body and the C-body using the same 110.8 in wheelbase. Most C-body vehicles were moved to the GM G platform or GM K platform in the mid-1990s.

The C-body was rear-wheel drive until 1984; from 1985 onwards, the C-body was front-wheel drive. The former rear-wheel-drive C-body was continued as "D-body" from 1985 to 1996 under the 1985-86 Cadillac Fleetwood Brougham, 1987-92 Cadillac Brougham, and 1993-96 Cadillac Fleetwood.

This platform was the basis for the following vehicles:

Years	Model	Next platform
1965-1976	Cadillac Calais
1971-1996	Oldsmobile 98
1985-1988	Cadillac Sedan de Ville	GM K platform
1985-1992	Cadillac Fleetwood	GM D platform
1985-1993	Cadillac Coupe de Ville	GM K platform
1987-1990	Buick Electra Park Avenue
1991-1996	Buick Park Avenue	GM G platform
1993	Cadillac Sixty Special