Service
Your dealer knows your vehicle best and wants you to be happy with it. We hope you will go to your dealer for all your service needs. You will get genuine GM parts and GM-trained and supported service people.
We hope you will want to keep your GM vehicle all GM. Genuine GM parts have one of these marks:

See also:
Rear Window Defogger
The rear window defogger uses a warming grid to
remove fog or frost from the rear window.
(Rear Defogger): Press to turn the
rear window
defogger on or off. An indicator light below the button ...
Horn
Press on the steering wheel pad
to sound the horn. ...
Compass Zone
Your dealer/retailer will set the correct zone for your
location. If the zone is not set to your location or
you drive out of the area, the variance needs to be
changed to the appropriate zone.
...
