GM H Platform

The H platform, or H-body, refers to two different

automobile platform A car platform is a shared set of common design, engineering, and production efforts, as well as major components, over a number of outwardly distinct models and even types of cars, often from different, but somewhat related, marques. It is prac ...

s produced by

General Motors General Motors Company (GM) is an American Multinational corporation, multinational Automotive industry, automotive manufacturing company headquartered in Detroit, Michigan, United States. The company is most known for owning and manufacturing f ...

. The 1970s H-body was

rear-wheel drive Rear-wheel drive (RWD) is a form of engine and transmission layout used in motor vehicles, in which the engine drives the rear wheels only. Until the late 20th century, rear-wheel drive was the most common configuration for cars. Most rear-whee ...

and used for the

compact Compact as used in politics may refer broadly to a pact or treaty; in more specific cases it may refer to: * Interstate compact, a type of agreement used by U.S. states * Blood compact, an ancient ritual of the Philippines * Compact government, a t ...

Chevrolet Vega The Chevrolet Vega is a Subcompact car, subcompact automobile manufactured and marketed by General Motors, GM's Chevrolet division from 1970 until 1977. Available in two-door hatchback, notchback, station wagon, wagon, and sedan delivery body st ...

and

Monza Monza (, ; ; , locally ; ) is a city and ''comune'' (municipality) on the Lambro, River Lambro, a tributary of the Po (river), River Po, in the Lombardy region of Italy, about north-northeast of Milan. It is the capital of the province of Mo ...

, and their Buick, Oldsmobile, and Pontiac derivatives. The 1980s H-body was a

front-wheel drive Front-wheel drive (FWD) is a form of internal combustion engine, engine and transmission (mechanics), transmission layout used in motor vehicles, in which the engine drives the front wheels only. Most modern front-wheel-drive vehicles feature ...

full-size car Full-size car—also known as large car—is a vehicle size class which originated in the United States and is used for cars larger than mid-size cars. It is the largest size class for cars. In the United Kingdom, this class is referred to as ...

platform, was essentially identical to the C-body platform, sharing wheelbase, most body panels and glass, as well as engines. The H-bodies included the

Buick LeSabre The Buick LeSabre is a full-size car made by the division Buick of General Motors from 1959 until 2005. Prior to 1959, this position had been retained by the full-size Buick Special model (1936–58). The "LeSabre", which is French for "the sab ...

Oldsmobile 88 The Oldsmobile 88 (marketed from 1989 on as the Eighty Eight) is a full-size car that was sold and produced by Oldsmobile from 1949 until 1999. From 1950 until 1974, the 88 was the division's most profitable line, particularly the entry-level m ...

, and

Pontiac Bonneville The Pontiac Bonneville is a model line of full-size or mid-size FR (until 1987) or FF cars manufactured and marketed by Pontiac from 1957 until 2005. The Bonneville (marketed as the Parisienne in Canada until 1981), and its platform partne ...

— as distinct from the upper tier

Buick Electra The Buick Electra is a full-size luxury car manufactured and marketed by Buick from 1959 to 1990, over six generations. Introduced as the replacement for the Roadmaster lines, the Electra served as the flagship Buick sedan line through its en ...

Oldsmobile Ninety-Eight The Oldsmobile 98 (spelled Ninety-Eight from 1952 to 1991, and Ninety Eight from 1992 to 1996) is the full-size flagship model of Oldsmobile that was produced from 1940 until 1942, and then from 1946 to 1996. The name – reflecting a "Series ...

and Cadillac Deville/Fleetwood models. * 1971–1980

GM H platform (RWD) The General Motors H platform (or H-body) is an automobile platform used by subcompact cars from the 1971 to 1980 model years. The first subcompact car design developed by GM, the rear-wheel drive H platform initially underpinned the Chevrole ...

compact car Compact car is a vehicle size class—predominantly used in North America—that sits between subcompact cars and mid-size cars. "Small family car" is a British term and a part of the C-segment in the European car classification. However, before ...

s * 1986–2005

GM H platform (FWD) 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 ...

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