See also:

Cigarette Lighter
The vehicle may have a cigarette lighter. To use the lighter, push it in all the way and let go. When it is ready, it will pop back out by itself. Notice: Holding a cigarette lighter in while ...

Tachometer
The tachometer displays the engine speed in revolutions per minute (rpm). ...

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 ...