See also:

Power Lumbar
Power Lumbar To adjust the power lumbar support, if equipped: • On vehicles with two-way lumbar, press and hold the top or bottom of the control to increase or decrease lumbar support. • On v ...

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 on ...

Customer Satisfaction Procedure (U.S. and Canada)
Your satisfaction and goodwill are important to your dealer and to GMC. Normally, any concerns with the sales transaction or the operation of the vehicle will be resolved by your dealer's sales or ser ...