See also:

Storing Radio Station Presets
This feature stores a mix of up to 30 AM, FM, and XM (if equipped) preset stations. To store presets: 1. Press to turn the system on. 2. If viewing a map screen, press AUDIO, FAV or press the sou ...

Ignition Positions (Key Access)
The ignition switch can be turned to four different positions. To shift out of P (Park), the ignition switch must be in ON/RUN or ACC/ACCESSORY and the brake pedal must be applied. Notice: ...

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 ...