OnStar Services
See also:
Engine Oil Life System
The engine oil life system calculates engine oil life based on vehicle use and displays the CHANGE ENGINE OIL SOON message when it is time to change the engine oil and filter.
The oil life system sho ...
Power Liftgate
On vehicles with a power liftgate, the vehicle must be in P (Park) to operate.
The taillamps flash when the power liftgate moves.
WARNING
You or others could be injured if caught in the path of th ...
Ending a Call
Press to end a call. ...





