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Overview
The new 2004 Buick Rainier offers a level of style, ride, comfort and performance that sets it apart from other mid-size sport utility vehicles. Rainier comes standard-equipped with a Vortec 4200 ...

3.6L V6 Engine
If the temperature overheat gauge is no longer in the overheat zone or an engine coolant temperature warning light no longer displays, the vehicle can be driven. Continue to drive the vehicl ...

Lumbar Adjustment
To adjust the lumbar support: ► Press and hold the front or rear of the control to increase or decrease lumbar support. ► Press and hold the top or bottom of the control to raise or lo ...