See also:

OnStar®
If equipped, this vehicle has a comprehensive, in-vehicle system that can connect to a live Advisor for Emergency, Security, Navigation, Connection, and Diagnostic Services. See OnStar Overview&nb ...

Turning the System On or Off
VOL/ (Volume/Power): Press to turn the system on and off ...

Power Seat Adjustment
To adjust a power seat, if equipped: - Move the seat forward or rearward by sliding the horizontal control forward or rearward. - Raise or lower the front or rear part of the seat cushion ...