See also:

Activating a Setting
1. Turn the Menu knob to highlight the setting. 2. Press SELECT to activate the setting. ...

Glove Box
Lift the glove box handle up to open it. Use the key to lock and unlock the glove box. ...

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 the v ...