Interior Mirror
The vehicle has an automatic dimming inside rearview mirror. Automatic dimming reduces the glare of lights from behind the vehicle. The dimming feature comes on and the indicator light illuminates each time the vehicle is started.
Press the 
button, located on the
mirror, to turn the
dimming feature and compass on or off.
See Automatic Dimming Rearview Mirror.
See also:
Accessories and Modifications
When you add non-GM accessories to your vehicle
they can affect your vehicle’s performance and
safety, including such things as, airbags, braking,
stability, ride and handling, emissions systems, ...
Managing the Vehicle Damage Repair
Process
In the event that your vehicle requires damage repairs,
GM recommends that you take an active role in its
repair. If you have a pre-determined repair facility of
choice, take your vehicle there, ...
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 ...