GM D platform

See also: GM C platform

The D platform, or D-body was an automobile platform designation, used from at least 1952 until 1996. During that time period it was exclusive to Cadillac. It was closely related to the GM B platform and C platform.

The D-body was used for the Cadillac Series 75 from at least 1952 through 1976 and for the Cadillac Fleetwood Limousine from 1977 through 1984. When most GM full-size luxury cars moved from the rear wheel drive GM C platform to the front wheel drive GM C platform in 1985, the D-body designation was reassigned to the rear wheel drive GM C platform which continued to be used by the 1985-1986 Cadillac Fleetwood Brougham, 1987-1992 Cadillac Brougham and 1993-1996 Cadillac Fleetwood. In turn the 1985-1987 Cadillac Fleetwood 75, which took the place of the Cadillac Fleetwood Limousine, was produced on the new front wheel drive GM C platform, and production of the old GM D platform came to an end.

Early designation D-bodies (1952-1984) were all produced in Detroit, Michigan. Since all rear wheel drive C-bodies were being produced in Arlington, Texas prior to the name change, all subsequent D-bodies were built there afterwards (1985-1996).

Production ended in 1996, leaving GM without a rear wheel drive luxury sedan. Later Cadillac introduced smaller cars on the Sigma platform.

Applications:

Early:

• 1952–1976 Cadillac Series 75
• 1977–1984 Cadillac Fleetwood Limousine

Late:

• 1985–1986 Cadillac Fleetwood Brougham
• 1987–1992 Cadillac Brougham
• 1993–1996 Cadillac Fleetwood