See also:

Compass Messages
CAL This message is displayed when the compass needs to be calibrated. See Compass on page 5‑5. – – – Three dashes will be displayed if the compass needs service. See your dealer fo ...

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 days, OnS ...

Windshield Replacement
If the vehicle is equipped with the Head-Up display (HUD) system and the windshield needs to be replaced, get one that is designed for HUD or the HUD image may look out of focus. ...