The ultrasonic sensors are not kept clean. So, be
sure to keep your vehicle’s rear bumper free of mud,
dirt, snow, ice, and slush. For cleaning instructions,
seeWashing Your Vehicle on page 5-87. If the DIC
still displays the PARK ASSIST OFF message after
cleaning the bumper and driving forward at a speed
of at least 15 mph (25 km/h), see your dealer.
Other conditions that may affect system performance
include vibrations from a jackhammer or the
compression of air brakes on a very large truck or
other mechanical devices that interfere with URPA
performance.
When URPA is disabled without driver action and the
driver attempts to turn URPA back on using the
Driver Information Center (DIC), the PARK ASSIST
ON option will not be selectable if the necessary
conditions stated above for normal system operation
are not met.
As always, drivers should use care when backing up a
vehicle. Always look behind you, being sure to check
for other vehicles, obstructions and blind spots.
For Driver Information Center messages related to
URPA, seeDIC Warnings and Messages on page 3-56.
If the bumper is damaged, your URPA system may
not work properly. Take the vehicle to your dealer
to repair the system.
Accessory Power Outlet(s)
The accessory power outlets can be used to plug in
electrical equipment such as a cellular telephone or
CB radio.
Your vehicle has two power outlets. One is located next
to the ashtray and the other is located on the right
forward lower edge of the driver’s seat.
Your vehicle may have a small cap that must be pulled
down to access the accessory power outlet. If it does,
when not using the outlet be sure to cover it with
the protective cap.
Notice:Leaving electrical equipment on for
extended periods will drain the battery. Always turn
off electrical equipment when not in use and do
not plug in equipment that exceeds the maximum
amperage rating.
Certain electrical accessories may not be compatible to
the accessory power outlets and could result in blown
vehicle or adapter fuses. If you experience a problem
see your dealer for additional information on the
accessory power outlets.
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SERVICE A/C (Air Conditioning)
SYSTEM
This message will display when the electronic sensors
that control the air conditioning and heating systems are
no longer working. Have the climate control system
serviced by your GM dealer if you notice a drop
in heating and air conditioning efficiency.
SERVICE AIR BAG
This message will display when there is a problem with
the airbag system. Have your vehicle serviced by
your GM dealer immediately. SeeAirbag Readiness
Light on page 3-36for more information.
SERVICE BATTERY CHARGING
SYSTEM
This message will display when there is a problem with
the generator and battery charging systems. Driving
with this problem could drain your battery. Turn off all
unnecessary accessories. Stop and turn off the
vehicle as soon as it is safe to do so. Have the electrical
system checked by your GM dealer immediately.
SERVICE BRAKE ASSIST
This message will display if there is a problem with the
brake system. The brake system warning light and
the anti-lock brake system warning light may also be
displayed on the instrument panel cluster. SeeBrake
System Warning Light on page 3-40andAnti-Lock
Brake System Warning Light on page 3-41for more
information. If this happens, stop as soon as possible
and turn off the vehicle. Restart the vehicle and
check for the message on the DIC display. If the
message is displayed or appears again when you begin
driving, the brake system needs service. See your
GM dealer as soon as possible. SeeBrakes on
page 5-40for more information.
SERVICE BRAKE SYSTEM
This message will display if the ignition is on to inform
the driver that the brake uid level is low. Have the
brake system serviced by your GM dealer as soon as
possible. The brake system warning light will also
appear on the instrument panel cluster when this
message appears on the DIC. SeeBrake System
Warning Light on page 3-40.
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