See also:

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 ...

Increasing Speed While Using Cruise Control
If the cruise control system is already activated: - Press and hold the +RES button on the steering wheel until the desired speed is reached, then release it. - To increase vehicle speed in ...

Problems with Route Guidance
Inappropriate route guidance may occur under one or more of the following conditions: You have not turned onto the road indicated. Route guidance may not be available when using automatic rerout ...