General Motors W platform

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The W-platform (also known as the W-body) was a General Motors automotive platform underpinning both mid-size and full-size front-wheel drive cars across the platform's three generations from 1987 through 2016 model years. Code-named GM10, the program began development in 1982 under Chairman Roger B. Smith. The new design debuted in 1987 with the Pontiac Grand Prix, Buick Regal, and Oldsmobile Cutlass Supreme coupes, with the four-door sedan body style introduced for 1990. The 1997–2005 2nd Generation, or W2 Platform, used both a 110.5 in (2,807 mm) full-size wheelbase as well as a 109.0 in (2,769 mm) mid-size wheelbase. From 2005 through 2016, the W3 Platform used a 110.5 in (2,807 mm), full-size wheelbase in sedan and coupe configurations, including for the Pontiac Grand Prix (2004-2008), Buick LaCrosse/Allure (2005-2009), Chevrolet Impala/Impala Limited (2005-2016), and Chevrolet Monte Carlo (2000-2007) — each available in high-performance V8 variants.

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