Dome Lamp Override

The dome override button is located below the exterior lamps knob.
To turn the dome lamps off, press the button.
The dome lamps will remain off when a door is open. This will override the illuminated entry feature unless you use the Remote Keyless Entry (RKE) transmitter to unlock the vehicle.
To return the lamps to automatic operation, press the button again. The dome lamps come on when a door is opened.
See also:
Compass Calibration
The compass can be manually calibrated. Only calibrate
the compass in a magnetically clean and safe location,
such as an open parking lot, where driving the vehicle in
circles is not a danger. I ...
Cellular and GPS Antennas
Avoid placing items over or near the
antenna to prevent blocking cellular
and GPS signal reception. Cellular
reception is required for OnStar to
send remote signals to the vehicle. ...
Compass Calibration
Press and hold the on/off button to activate the
compass calibration mode. CAL will be displayed
in the compass window on the mirror.
The compass can be calibrated by driving the
vehicle in circ ...
