See also:

How to Detect a Tamper Condition
If is pressed and the horn sounds, an attempted break-in occurred while the system was armed. If the alarm has been activated, a message will appear on the DIC. See Anti-theft Alarm System Messa ...

Automatic Dimming Feature
The vehicle may have an automatic dimming driver outside mirror. Automatic dimming reduces the glare of the headlamps behind you. See Power Mirrors. ...

Service
For service and parts needs, visit your dealer/retailer. You will receive genuine GM parts and GM-trained and supported service people. Genuine GM parts have one of these marks: ...