See also:

Instrument Panel
A. Exterior Lamp Controls. Fog Lamps (If Equipped). Instrument Panel Illumination Control. Head-Up Display (HUD) (If Equipped). B. Air Vents. C. Turn and Lane-Change Lever. See Turn and La ...

Starting Procedure (Keyless Access)
1. If the vehicle has the keyless access system, the transmitter must be in the vehicle. Put your foot on the brake pedal and push the START button. When the engine begins cranking, let go ...

Diagnostics
OnStar Vehicle Diagnostics will perform a vehicle check every month. It will check the engine, transmission, antilock brakes, and major vehicle systems. It also checks the tire pressures, if ...