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 the v ...

Turning the System On and Off
Press this button, located next to the radio, to disable URPA. The indicator light will come on and PARK ASSIST OFF displays on the Driver Information Center (DIC). See Object Detection System Me ...

Checking Coolant
The vehicle must be on a level surface when checking the coolant level. Check to see if coolant is visible in the coolant surge tank. If the coolant inside the coolant surge tank is boiling, do no ...