OnStar Services

See also:

Voice Recognition
The voice recognition system uses commands to control the system and dial phone numbers. Noise: The system may not recognize voice commands if there is too much background noise. When to Spe ...

Tachometer
The tachometer displays the engine speed in revolutions per minute (rpm). For eAssist vehicles, when the ignition is in ON/RUN, the tachometer indicates the vehicle status. When pointing to ...

COOLANT LEVEL LOW ADD COOLANT
This message will display if the coolant is low. See Engine Coolant. ...