GMC 2012 Terrain Owner's Manual page 261

Turning the System On and Off
The URPA system can be turned
on and off using the infotainment
system controls. See Vehicle
Personalization on page 5 33
for more information.
When the system is off, PARK
ASSIST OFF displays on the
Driver Information Center (DIC).
The message disappears after a
short period of time.
URPA defaults to the on setting
each time the vehicle is started.
When the System Does Not
Seem to Work Properly
The following messages may be
displayed on the DIC:
SERVICE PARKING ASSIST: If
this message occurs, take the
vehicle to your dealer to repair the
system.
PARK ASSIST OFF: If the URPA
system does not activate due to a
temporary condition, the message
displays on the DIC. This can occur
under the following conditions:
The driver has disabled the
system.
The ultrasonic sensors are not
clean. Keep the vehicle's rear
bumper free of mud, dirt, snow,
ice, and slush. For cleaning
instructions, see Exterior Care
on page 10 83.
The park assist sensors are
covered by frost or ice. Frost or
ice can form around and behind
the sensors and may not always
be seen; this can occur after
washing the vehicle in cold
weather. The message may not
clear until the frost or ice has
melted.
Driving and Operating
A trailer was attached to
the vehicle, or an object was
hanging out of the liftgate during
the last drive cycle. Once the
object is removed, URPA will
return to normal operation.
A tow bar is attached to the
vehicle.
The bumper is damaged.
Take the vehicle to your dealer
to repair the system.
Other conditions, such as
vibrations from a jackhammer or
the compression of air brakes on
a very large truck, are affecting
system performance.
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