Exterior Lighting

See also:

Driving on Snow or Ice
Drive carefully when there is snow or ice between the tires and the road, creating less traction or grip. Wet ice can occur at about 0°C (32°F) when freezing rain begins to fall, resulting in even ...

Reading Lamps
There are front and rear reading lamps. The front reading lamps are located in the overhead console. The rear reading lamps are located in the headliner. or : Press to turn each lamp ...

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 ...