GM H platform (1986)

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Main article: GM H platform
GM H Platform (FWD)
1986 Buick LeSabre.jpg
1986 Buick LeSabre
Manufacturer General Motors
Also called H-body
Production 1986–1999
Body and chassis
Class Large car (E) platform
Body style(s) 2-door Coupé
4-door sedan
Vehicles Buick LeSabre
Oldsmobile Eighty-Eight
Pontiac Bonneville
Related GM C platform
GM G platform (FWD)
GM K platform (FWD)
Engine(s) Gasoline:
Buick V6
Transmission(s) 4-speed THM440T4 automatic
4-speed 4T60-E automatic
4-speed 4T60E-HD automatic
4-speed 4T65-E automatic
4-speed 4T65E-HD automatic
Wheelbase 110.8 in (2,814 mm)
Predecessor GM B platform
GM G platform (RWD)
Successor GM G platform

The H platform, or H-body designates a General Motors front-wheel-drive full-sized automobile platform beginning in 1986. It is related to the C, G and K platforms.

Previously the H platform designation was used for unrelated rear-wheel-drive compact cars.

Many H-bodies used GM's large 3800 V6, and supercharged versions were available from 1991 to 1999. They originally came in both 2-door and 4-door versions, but the four-door sedans were dramatically more popular, and two-door models were dropped by 1992.

According to one source,[1] the H-Body sedans were the next "big thing" for GM, and development cost more than $3 billion, which is on par with roughly how much Ford invested in the Ford Taurus. Both the H-body sedans and the Taurus (based on the D186 platform) were launched fully in 1986.

Starting in 2000, all H-body vehicles moved to the G platform, however GM continued to call it the H platform.[2]


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


  1. ^ 1 - Taub, Eric (Nov 1991). Taurus: The Making of the Car That Saved Ford. E. P. Dutton. ISBN 0-525-93372-7.
  2. ^ Frame, Phil (16 January 1995). "GM H CARS MOVE TO G PLATFORM". Automotive News. Retrieved 17 May 2013.