See also:

Exit Lighting
The headlamps, taillamps, parking lamps, back—up lamps, and license plate lamps come on at night, or in areas with limited lighting, when a door is opened after the ignition is turned off. The dome ...

Exterior Lighting
The exterior lamp control is located toward the end of the turn signal/lane change lever. : Turn the band with this symbol on it to operate the exterior lamps. The exterior lamp control h ...

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 ...