See also:

Headlamp High/Low-Beam Changer
Push the turn signal/lane change lever away from you to turn the high beams on. Pull the lever toward you and then release it to return to low beams. If the vehicle is turned off while the ...

Windshield Washer
WARNING! In freezing weather, do not use the washer until the windshield is warmed. Otherwise the washer fluid can form ice on the windshield, blocking your vision. ...

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 ...