GM W platform
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Current revision
{{Infobox Automobile platform
| name = W-body
| aka = GM10
| manufacturer = General Motors
| production = 1988–
| predecessor = G-body
| successor =
| class = Mid-size car
| layout = FF layout
| body_style = 4-door sedan
2-door coupé
| engine = 2.3 L Quad-4 I4
2.8 L 2800 V6
3.1 L 3100 V6
3.8 L 3800 V6
| transmission = 4-speed 4T60 automatic
| front_suspension = coil spring
| rear_suspension = transverse leaf spring
coil spring
| wheelbase = 107.5 in (2730 mm)
109.0 in (2769 mm)
110.5 in (2807 mm)
| related =
| vehicles = Buick Century
Buick LaCrosse
Buick Regal
Chevrolet Impala
Chevrolet Lumina
Chevrolet Monte Carlo
Oldsmobile Cutlass Supreme
Oldsmobile Intrigue
Pontiac Grand Prix
| similar = Ford D3 platform
Chrysler LX platform
}}
The W-body is a automobile platform from General Motors which underpins mid-size cars with front-wheel drive. The platform debuted as the GM10 program in 1988 with the Pontiac Grand Prix, the Buick Regal, and the Oldsmobile Cutlass Supreme coupés. Sedans followed for 1990. The later revision of this platform was known as the MS2000 or simply the W2-Car. Early versions used a fiberglass monoleaf spring in the rear, while second generation cars and the 1995 and up Lumina use a fully independent suspension front and rear with coil springs.
Vehicles using the W-body include:
- 107.5 in wheelbase:
- 1988-1996 Buick Regal
- 1988-1997 Oldsmobile Cutlass Supreme
- 1988-1996 Pontiac Grand Prix
- 1990-2001 Chevrolet Lumina
- 1995-1999 Chevrolet Monte Carlo
- 109 in wheelbase
- 1997-2005 Buick Century
- 1997-2004 Buick Regal
- 2000-2005 Chevrolet Monte Carlo
- 1998-2002 Oldsmobile Intrigue
- 110.5 in wheelbase
- 2000-2005 Chevrolet Impala
- 1997-2003 Pontiac Grand Prix
2004
The W platform was updated in 2004 rather than being replaced by a planned stretched Epsilon platform. The cars are built at GM's two Oshawa, Ontario plants. The transverse use of GM's small-block engine in the W-bodies was a major addition for 2005.
The future of both the platform and cars built off of it are in flux, though current rumors suggest a switch to a version of GM's Lambda crossover SUV platform called Chi.
Vehicles using the updated W platform:
- 110.5 in wheelbase
- 2004-present Pontiac Grand Prix
- 2005-present Buick LaCrosse
- 2005-present Buick Allure (Canada)
- 2006-2008 Chevrolet Impala
- 2006-2008 Chevrolet Monte Carlo
When the Oshawa plant closes in 2008, GM's W platform will reportedly cease production, being replaced by the GM Zeta platform.