OnStar Services

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 ...

Washer Fluid
What to Use When windshield washer fluid is needed, be sure to read the manufacturer's instructions before use. If operating the vehicle in an area where the temperature may fall below freezing, use ...

Cargo Cover
If your vehicle has a cargo cover, you can use it to cover items in the cargo area of your vehicle. To install the cargo cover, do the following: 1. Align the endcap with the pocket in the trim ...