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GM C Platform (1985)
GM C platform, also known as the C-Body, was a front wheel drive (FWD) automobile platform used by General Motors' Cadillac, Buick and Oldsmobile divisions for their full-sized automobiles from 1985 through 1996, sharing unibody construction, transverse engine configuration, rack and pinion steering and four-wheel independent suspension. C-Bodies used, V6 or V8 engines, GM's TMH440 transaxle (initially), unibody construction — and all had been aerodynamically improved, with the Oldsmobile achieving a .383 drag coefficient. GM's C platform and H platform were largely identical, sharing the same 110.8 in wheelbase, most bodywork, interior details, glass and engines. Manufacture began with the C platform in late 1983, first at two purpose-built plants, Wentzville Assembly and Orion Assembly — later moving to Lansing Car Assembly as well as Flint and Willow Run assembly plants. Significantly shorter, narrower, lighter and more fuel-efficient than the platform t ...
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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 four automobile brands: Chevrolet, Buick, GMC (marque), GMC, and Cadillac, each a separate division of GM. By total sales, it has continuously been the largest automaker in the United States, and was the List of manufacturers by motor vehicle production, largest in the world for 77 years before losing the top spot to Toyota in 2008. General Motors operates manufacturing plants in eight countries. In addition to its four core brands, GM also holds interests in Chinese brands Baojun and SAIC-GM-Wuling, Wuling via SAIC-GM-Wuling, SAIC-GM-Wuling Automobile. GM further owns GM Defense, a namesake defense vehicles division which produces military vehicles for the United States government and military, the vehicle safety, security, and information ...
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Orion Assembly
Orion Assembly is an automotive assembly plant in Orion Township, Michigan, United States, owned and operated by General Motors. From late 2025, the plant is slated to assemble the Chevrolet Silverado EV and GMC Sierra EV battery electric pickup trucks for the U.S. market. Opened in 1983, Orion Assembly assumed operations of Buick City in Flint, and Pontiac Assembly. The plant had approximately 1,032 salaried and hourly employees as of September 2019. History Orion Assembly commenced production on December 1, 1983 with the 1985 model C-body cars. Orion Assembly produced the Chevrolet Malibu and Pontiac G6 until 2009, when the plant was idled due to the General Motors Chapter 11 reorganization of 2009. The plant in suburban Detroit was saved from closure through a $1 billion grants and tax incentives from the state of Michigan, local municipalities and the federal government. Under an agreement with the UAW, the plant began assembling the successor to the South Korean ...
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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 partner, the Grand Ville, are some of the largest Pontiacs ever built; in station wagon body styles they reached just over long, and at and more were also some of the heaviest cars produced at the time. The Bonneville nameplate was introduced as a limited production performance convertible during the 1957 model year, its name taken from the Bonneville Salt Flats in Utah — an early site of US auto racing and numerous world's land speed record records, itself named after U.S. Army officer Benjamin Bonneville. Origin The Bonneville name first appeared in 1954 on a pair of bubble-topped GM Motorama concept cars called the Bonneville Special, sharing an appearance with the Chevrolet Corvette. It was also the beginning of a new tradi ...
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Oldsmobile LSS
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 models such as the 88 and Dynamic 88. The 88 series was also an image leader for Oldsmobile, particularly in the model's early years (1949–51), when it was one of the best-performing automobiles, thanks to its relatively small size, light weight, and advanced overhead-valve high-compression V8 engine. This engine, originally designed for the larger and more luxurious GM C platform (RWD), C-bodied Oldsmobile 98, 98 series, also replaced the Oldsmobile Straight-8 engine, straight-8 on the smaller GM B platform, B-bodied Oldsmobile Series 70, 78. With the large, high performance V8, the early Oldsmobile 88 is considered by some to be the first muscle car. Naming conventions used by GM since the 1910s for all divisions used alphanumeric design ...
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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 models such as the 88 and Dynamic 88. The 88 series was also an image leader for Oldsmobile, particularly in the model's early years (1949–51), when it was one of the best-performing automobiles, thanks to its relatively small size, light weight, and advanced overhead-valve high-compression V8 engine. This engine, originally designed for the larger and more luxurious C-bodied 98 series, also replaced the straight-8 on the smaller B-bodied 78. With the large, high performance V8, the early Oldsmobile 88 is considered by some to be the first muscle car. Naming conventions used by GM since the 1910s for all divisions used alphanumeric designations that changed every year. Starting after the war, Oldsmobile changed their designations and ...
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GM B Platform
The B platform (also known as the B body) is a full-size, rear-wheel drive, body-on-frame car platform, that was produced by General Motors (GM) from 1926 to 1996. Originally made for Oldsmobile and Buick, all of General Motors's five main passenger car makes would use it at some point. It was closely related to the original rear-wheel drive C and D platforms, and was used for convertibles, hardtops, coupes, sedans, and station wagons. With approximately 12,960,000 units built, divided across four marques, the 1965–1970 B platform is the fourth best selling automobile platform in history after the Volkswagen Beetle, Ford Model T, and the Fiat 124 (and its licence-built copies, mainly classic Ladas). Originally, the B platform was used for Buick and Oldsmobile products, with the A platform for Chevrolet and Oakland, and the C and D platforms devoted to Cadillac. During the General Motors companion make program, Vikings and Marquettes were also manufactured on this plat ...
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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 sabre", was Buick's mid-level full-size sedan above the Special but below the Electra during the 1960s then remained in its market position when the Electra was replaced with the Park Avenue. The LeSabre was available as a 2-door convertible, sedan or hardtop, a 4-door sedan or hardtop and station wagon throughout its production. History of model The LeSabre nameplate made its first appearance on the 1951 Le Sabre show car, which introduced the world to aircraft-inspired design elements such as the wrap-around windshield and tail fins. In 1959 LeSabre became the new moniker for what had previously been known as the Buick Special. The Buick LeSabre was offered in a full line of body styles except between 1965 and 1969 when its station wag ...
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GM D Platform
The GM D platform (informally, D-body), was a General Motors automobile platform designation, used in two series (1936–1984 and 1985–1996) for large body-on-frame rear-wheel drive automobiles. For the majority of its existence the D-Body represented the largest Cadillac, either the Fleetwood Series 75 or the Fleetwood Limousine. In 1985 GM downsized and redesignated its traditional large car rear wheel drive GM C platform as the new much smaller and lighter front wheel drive GM C platform. It also shifted its traditional, D platform Fleetwood limousine to the new C platform, ending production of the historic D platform. In turn, it redesignated the former RWD C platform the new D platform, and maintained production of a few RWD holdovers on it. The original D platform was closely related to GM's other two rear-wheel drive large car platforms: the mainstream GM B and the upscale C platforms. But save for the limited production top-of-the-line 1936–1942 Buick Limited, ...
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Oldsmobile Touring Sedan
The Oldsmobile 98 (spelled Ninety-Eight from 1952 to 1991, and Ninety Eight from 1992 to 1996) is the full-size car, full-size flagship model of Oldsmobile that was produced from 1940 until 1942, and then from 1946 to 1996. The name – reflecting a "Series 90" fitted with an 8-cylinder engine – first appeared in 1941 and was used again after American consumer automobile production resumed post-World War II. It was, as it would remain, the division's top-of-the-line model, with lesser Oldsmobiles having lower numbers such as the GM A platform (RWD), A-body Oldsmobile Series 60, 66 and 68, and the GM B platform, B-body Oldsmobile Series 70, 76 and 78. The Series 60 was retired in 1949, the same year the Oldsmobile 78 was replaced by the Oldsmobile 88, 88. The Oldsmobile 76 was retired after 1950. This left the two remaining number-names to carry on into the 1990s as the bread and butter of the full-size Oldsmobile lineup until the Eighty Eight-based Regency replaced the 98 ...
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Cadillac Deville
The Cadillac DeVille is a model name used by Cadillac over eight generations, originally to designate a trim level of the 1949 Cadillac Series 62 and later for a standalone model in the brand range. The last model marketed specifically as a ''DeVille'' was the 2005 full-size sedan, at the time, Cadillac's largest model. For 2006, the ''DeVille'' nameplate was retired, when the model line was carried forward (with minor revisions) as the Cadillac DTS, using a nomenclature adopted by the Cadillac STS and CTS. Early history The name "DeVille" is derived from the French ''de la ville'' or ''de ville'' meaning "of the town". In French coach building parlance, a coupé de ville, from the French ''couper'' (to cut), i.e., shorten or reduce, was a short four-wheeled closed carriage with an inside seat for two and an outside seat for the driver, and this smaller vehicle was intended for use in the town or city (de ville). An (unshortened) limousine or (in the United States) to ...
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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 90" fitted with an 8-cylinder engine – first appeared in 1941 and was used again after American consumer automobile production resumed post-World War II. It was, as it would remain, the division's top-of-the-line model, with lesser Oldsmobiles having lower numbers such as the A-body 66 and 68, and the B-body 76 and 78. The Series 60 was retired in 1949, the same year the Oldsmobile 78 was replaced by the 88. The Oldsmobile 76 was retired after 1950. This left the two remaining number-names to carry on into the 1990s as the bread and butter of the full-size Oldsmobile lineup until the Eighty Eight-based Regency replaced the 98 in 1997. Occasionally additional nomenclature was used with the name, such as L/S and Holiday, and the ...
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