See also:

Removing the Flat Tire and Installing the Spare Tire
This vehicle may have aluminum wheels with exposed wheel nuts. Use the wheel wrench to loosen all the wheel nuts. Do not remove them yet. Or, this vehicle may have steel wheels with plastic covers. ...

Instrument Panel Illumination Control
This feature controls the brightness of the instrument panel controls and infotainment display screen. The thumbwheel is located to the left of the steering column on the instrument panel. : Mo ...

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 ...