OnStar Services

See also:

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

Engine Coolant Temperature Warning Light
For eAssist vehicles, this light comes on briefly while starting the vehicle. If it does not, have the vehicle serviced by the dealer. If the system is working normally, the indicator lig ...

Power Seat Adjustment
To adjust a power seat: ► Move the seat forward or rearward by sliding the control forward or rearward. ► Raise or lower the front part of the seat cushion by moving the front of the c ...