See also:

OnStar Additional Information
Transferring Service Push to request account transfer eligibility information. The Advisor can assist in canceling or removing account information. If OnStar receives information that vehicle own ...

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 hot and n ...

Tire Pressure
If the vehicle is a hybrid, see the hybrid supplement for more information. Tires need the correct amount of air pressure to operate effectively. Notice: Neither tire underinflation nor overinflatio ...