Compass Variance
Compass variance is the difference between earth’s
magnetic north and true geographic north. If the mirror
is not adjusted for compass variance, the compass
could give false readings.
The mirror is set in zone eight upon leaving the factory.
It will be necessary to adjust the compass to
compensate for compass variance if the vehicle is
driven outside zone eight. Under certain circumstances,
such as a long distance, cross-country trip, it will be
necessary to adjust the compass variance.
To adjust for compass variance, do the following:
1. Find your current location and variance zone
number on the zone map. SeeAutomatic Dimming
Rearview Mirror with OnStar
®and Compass on
page 2-34for map information.
2. Press and hold the on/off button until a zone
number appears on the display.
3. Once the zone number appears on the display,
press the on/off button quickly until you reach
the correct zone number. If C or CAL appears in
the compass window, the compass may need
calibration. See “Compass Calibration” listed
previously.
Outside Power Mirrors
The controls for the
outside power mirrors are
located on the driver’s
door armrest.
Press the left or right side of the selector switch located
beneath the control pad to choose the left or right
mirror.
To adjust the mirror, press one of the four arrows
located on the control pad to move the mirror in the
direction you want it to go. Adjust each outside mirror so
that you can see a little of your vehicle, and the area
behind your vehicle.
The mirrors may also have an arrow that ashes when
the turn signal is used. SeeTurn and Lane-Change
Signals on page 3-8.
2-37
Object Detection Systems
Ultrasonic Rear Parking
Assist (URPA)
If your vehicle has the Ultrasonic Rear Parking Assist
(URPA) system, it helps you park easier and avoid other
vehicles while in REVERSE (R). It operates at speeds
less than 5 mph (8 km/h). It can determine how
close objects are to the rear bumper, up to 8 feet (2.5 m)
behind your vehicle. The distance sensors are located
on the rear bumper.
{CAUTION:
The Ultrasonic Rear Parking Assist (URPA)
system does not replace driver vision. It
cannot detect:
objects that are below the bumper,
underneath the vehicle, or if they are too
close or far from the vehicle
children, pedestrians, bicyclists, or pets.
CAUTION: (Continued)
CAUTION: (Continued)
If you do not use proper care before and while
backing; vehicle damage, injury, or death
could occur. Even with URPA, always check
behind your vehicle before backing up. While
backing, be sure to look for objects and check
your vehicle’s mirrors.
The display is located on
the rear shelf, below the
rear window, and can
be seen by looking over
your right shoulder.
URPA uses three color-coded lights to provide distance
and system information.
2-39