General Motors G platform (FWD)

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Main article:
GM G platform
GM G platform (FWD)
GM Omega platform

The

automobile platform designation was used for front-wheel drive full-sized and luxury cars
between 1995 and 2011.

Previously, General Motors used the

G-body designation for unrelated mid-sized
cars.

The G-body was based on

sedan (a new model that replaced the Riviera-derived Toronado
). By the turn of the millennium, full-sized cars from four different GM makes were using some derivative of the platform.

Platform consolidation

Starting with the 1997 Buick Park Avenue, GM consolidated its four large-car platforms;

H platform, and G platform; all to the G platform. However, GM decided to retain their previous platform designations.[2]
These legacy platform designations were used in the VIN number and official GM publications. Models designated as "G" went out of production for MY (Model Year) 1999, but successor models were sold until MY 2011.

The G-body was noted for having one of the strongest unibody car frames in production (25 Hz). GM literature noted the need to use a 'frame crusher,' designed to test heavy-duty truck frames, to finally break the G-body structure in their crush-to-failure procedures.

The G platform vehicles were also noted for having

stabilizer bars and lateral links in the rear suspension to further control wheel toe. [citation needed
]

Vehicles 1995-2005

1999 Buick Riviera
Years Wheelbase Model Platform Name*
1995–1999 113.8 in Buick Riviera GM G platform
1995–1999 113.8 in Oldsmobile Aurora GM G platform
1997–2005 113.8 in Buick Park Avenue
GM C platform
1998–2004 112.2 in Cadillac Seville
GM K platform
2000–2005 112.2 in Buick LeSabre
GM H platform
2000–2005 112.2 in Pontiac Bonneville
GM H platform
2001–2003 112.2 in Oldsmobile Aurora GM G platform
2000–2005 115.3 in
Cadillac DeVille
GM K platform

* Official designation given by GM, despite using a G platform-derivative. This name also corresponds to the 4th letter in the

VIN
of the vehicle.

2006 Revision

The G platform was updated for the 2006 model year.[3] The final car using this platform was the Buick Lucerne, which ended production in June 2011.[4]

Vehicles

2006 Buick Lucerne
Years Wheelbase Model Platform Name*
2006–2011 115.6 in Cadillac DTS
GM K platform
2006–2011 115.6 in Buick Lucerne
GM H platform

* Official designation given by GM, despite using a G platform-derivative. This name also corresponds to the 4th letter in the

VIN
of the vehicle.

References

  1. ^ Contract https://www.mackinac.org/archives/fpi/mega/Bosal_Industries-6-10-97-BM.pdf
  2. ^ Frame, Phil (16 January 1995). "GM H CARS MOVE TO G PLATFORM". Automotive News. Archived from the original on 16 June 2013. Retrieved 17 May 2013.
  3. ^ "Buick Lucerne". Car and Driver. February 2005. Retrieved 17 May 2013.
  4. ^ "US: GM axes Cadillac DTS and Buick Lucerne". just-auto.com. 2011-05-26. Retrieved 2011-06-05.
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