OnStar Additional Information

See also:

Driving On Grades
Reduce speed and shift to a lower gear before you start down a long or steep downgrade. If you don’t shift down, you might have to use your brakes so much that they would get hot and no longer w ...

Rear Seats
The vehicle's rear seats have adjustable head restraints in the outboard seating positions. The height of the head restraint can be adjusted. Pull the head restraint up to raise it. Try to mov ...

Every Engine Oil Change
► Change engine oil and filter. Reset oil life system. See Engine Oil  and Engine Oil Life System . An Emission Control Service. ► Engine coolant level check. See Engine Coolant . ...