Cleaning Exterior Lamps/Lenses
Use only lukewarm or cold water, a soft cloth, and a car washing soap to clean exterior lamps and lenses.
Follow instructions under "Washing the Vehicle" later in this section.
See also:
Fuel
For diesel engine vehicles, see “Fuel for Diesel Engines” in the Duramax Diesel Supplement.
For Vehicles with gasoline engines, please read this. ...
Compass
The vehicle may have a compass in the Driver Information Center (DIC). ...
Turning the System On and Off
The URPA system can be turned on and off using the rear park aid disable button located next to the radio.
The indicator light comes on when the system is disabled and turns off when the system is ...





