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. ...

D-Ring Sliders
For vehicles with a D-ring system, there are four D-ring sliders that move along rails. These can be used as tie-downs when storing cargo. Insert the D-ring sliders (A) into the channel (B) lo ...

Driving On Grades
Reduce speed and shift to a lower gear before starting down a long or steep downgrade. If the transmission is not shifted down, the brakes might have to be used so much that they would get h ...