See also:

Display
Press CONFIG to enter the configure menu options, then press CONFIG repeatedly until Display is selected or press the Display screen button. Display OFF Press this screen button to turn the disp ...

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: ...

Potential Issues
Some OnStar services are disabled after five days. OnStar cannot perform Remote Door Unlock or Stolen Vehicle Assistance after the vehicle has been off continuously for five days. After five ...