See also:

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 ...

Testing the Alarm
To test the alarm: 1. From inside the vehicle, lower the driver window and open the driver door. 2. Activate the system by locking the doors with the power door lock switch while the door is open, ...

Engine Overheating
The vehicle has several indicators to warn of engine overheating. There are two engine hot messages that may be displayed in the Driver Information Center (DIC). See Engine Cooling System Mes ...