Compass; Compass Calibration - Chevrolet 2009 TrailBlazer Owner's Manual

Compass

Compass Operation
There is a compass display in the upper right corner of
the mirror.
Press O or depending on the mirror, press COMP to
turn the compass on or off.

Compass Calibration

The compass may need calibration if:
•
After several seconds, the display does not show a
compass heading (N for North, for example), there
may be a strong magnetic field interfering with
the compass. Interference can be caused by
a magnetic antenna mount, magnetic note pad
holder or a similar magnetic item.
•
The compass does not display the correct heading
and the compass zone variance is set correctly.
2-42
In order to calibrate, CAL must be displayed in the
mirror compass windows. If CAL is not displayed, press
and hold O or depending on the mirror, press COMP
until CAL displays.
The compass can be calibrated by driving the vehicle in
circles at 5 mph (8 km/h) or less until the display
reads a direction.
Compass Variance
The mirror is set to zone eight. If you do not live in zone
eight or drive out of the area, the compass variance
needs to be changed to the appropriate zone.