See also:

Engine Cooling System Messages
A/C OFF DUE TO HIGH ENGINE TEMP This message displays when the engine coolant becomes hotter than the normal operating temperature. To avoid added strain on a hot engine, the air conditioning com ...

Chime Volume
This allows selection of the chime volume level. Press SELECT when Chime Volume is highlighted. Turn the Menu knob to select Normal or High. Press SELECT to confirm the selection. Press BAC ...

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 ...