General Motors H platform (FWD)

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GM H platform (FWD)
1986 Buick LeSabre
Overview
Manufacturer	General Motors
Also called	H-body
Production	1986–1999
Body and chassis
Class	Large car platform
Body style(s)	2-door coupe 4-door sedan
Vehicles	Buick LeSabre Oldsmobile Eighty-Eight Pontiac Bonneville
Related	GM C platform GM G platform (FWD) GM K platform (FWD)
Powertrain
Engine(s)	Gasoline: Buick V6
Transmission(s)	4-speed THM440T4/4T60-E/4T65-E automatic
Dimensions
Wheelbase	110.8 in (2,814 mm)
Chronology
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 car platform introduced in 1986, and in most respects identical to the front-drive C platform introduced for model year 1985. Originally available in both 2-door and 4-door versions — the latter was more popular and two-door models dropped by 1992. Engines were predominantly the Buick's 3.8 liter (231 cubic-inch) V6 engine and later, GM's Buick 3800 V6; in naturally aspirated and supercharged variants (from 1991 to 1999).

Previously, GM had used the H platform nomenclature to designate the unrelated rear-wheel-drive compact cars. Starting in 2000, all H-body vehicles moved to the G platform, related also to the K platform. GM continued to call it the H platform.^[1]