2010 GMC SIERRA DENALI Owners Manual

Object Detection Systems
Ultrasonic Rear Parking
Assist (URPA)
For vehicles with the Ultrasonic Rear Parking Assist
(URPA) system, it operates at speeds less than
8 km/h (5 mph), and assists the driver with parking and
avoiding objects while in R (Reverse). The sensors on
the rear bumper are used to detect the distance to an
object up to 2.5 m (8 ft) behind the vehicle, and at least
25.4 cm (10 in) off the ground.
{WARNING:
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.(Continued)
WARNING: (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 the
vehicle before backing up. While backing, be sure
to look for objects and check the vehicle's mirrors.
How the System Works
URPA comes on automatically when the shift lever is
moved into R (Reverse). A single tone sounds to
indicate the system is working.
URPA operates only at speeds less than
5 mph (8 km/h).
An obstacle is indicated by audible beeps. The interval
between the beeps becomes shorter as the vehicle gets
closer to the obstacle. When the distance is less than
30 cm (12 in) the beeps are continuous.
To be detected, objects must be at least 25.4 cm (10 in)
off the ground and below tailgate level. Objects must
also be within 2.5 m (8 ft) from the rear bumper. This
distance may be less during warmer or humid weather.
3-43

The system can be
disabled by pressing the
rear park aid disable
button located next to the
radio.
The indicator light will come on and PARK ASSIST OFF
displays on the Driver Information Center (DIC) to
indicate that URPA is off, see DIC Warnings and
Messages on page 4‑57.
Notice: If you use URPA while the tailgate is
lowered, it may not detect an object behind your
vehicle, and you might back into the object and
damage your vehicle. Always verify the tailgate is
closed when using URPA or turn off URPA when
driving with the tailgate lowered.
When the System Does Not Seem to
Work Properly
If the URPA system will not activate due to a temporary
condition, the messages PARK ASSIST OFF or PARK
ASST BLOCKED SEE OWNERS MANUAL will be
displayed on the DIC.
SERVICE PARK ASSIST : If this message occurs, take
the vehicle to your dealer/retailer to repair the system. PARK ASSIST OFF :
This message occurs if the driver
disables the system.
PARK ASST BLOCKED SEE OWNERS MANUAL :
This message can occur under the following conditions:
.The ultrasonic sensors are not clean. Keep the
vehicle's rear bumper free of mud, dirt, snow, ice
and slush. For cleaning instructions, see Washing
Your Vehicle on page 6‑108.
.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.
.A trailer was attached to the vehicle, or a bicycle or
an object was hanging out of the tailgate during the
last drive cycle. Once the attached object is
removed and the tailgate is raised, URPA will
return to normal operation.
.A tow bar is attached to the vehicle.
.The vehicle's bumper is damaged. Take the vehicle
to your dealer/retailer to repair the system.
.Other conditions may affect system performance,
such as vibrations from a jackhammer or the
compression of air brakes on a very large truck.
3-44

If the system is still disabled, after driving forward at
least 40 km/h (25 mph), take the vehicle to your dealer/
retailer.
Rear Vision Camera (RVC)
This vehicle may have a Rear Vision Camera system.
Read this entire section before using it.
{WARNING:
The Rear Vision Camera (RVC) system does not
replace driver vision. RVC does not:
.Detect objects that are outside the camera's
field of view, below the bumper, or underneath
the vehicle.
.Detect children, pedestrians, bicyclists,
or pets.
Do not back the vehicle by only looking at the
RVC screen, or use the screen during longer,
higher speed backing maneuvers or where there
could be cross-traffic. Your judged distances using
the screen will differ from actual distances. (Continued)
WARNING: (Continued)
So if you do not use proper care before backing
up, you could hit a vehicle, child, pedestrian,
bicyclist, or pet, resulting in vehicle damage,
injury, or death. Even though the vehicle has the
RVC system, always check carefully before
backing up by checking behind and around the
vehicle.
Vehicles Without Navigation System
The rear vision camera system is designed to help the
driver when backing up by displaying a view of the area
behind the vehicle. When the key is in the ON/RUN
position and the driver shifts the vehicle into
R (Reverse), the video image automatically appears on
the inside rear view mirror. Once the driver shifts out of
R (Reverse), the video image automatically disappears
from the inside rear view mirror.
Turning the Rear Vision Camera System
Off or On
To turn off the rear vision camera system, press and
hold
z, located on the inside rearview mirror, until the
left indicator light turns off. The rear camera vision
display is now disabled.
3-45

To turn the rear vision camera system on again, press
and hold
zuntil the left indicator light illuminates. The
rear vision camera system display is now enabled and
the display will appear in the mirror normally.
Vehicles With Navigation System
The rear vision camera system is designed to help the
driver when backing up by displaying a view of the area
behind the vehicle. When the driver shifts the vehicle
into R (Reverse), the video image automatically
appears on the navigation screen. Once the driver shifts
out of R (Reverse), the navigation screen will go back to
the last screen that had been displayed, after a delay.
Turning the Rear Vision Camera System
On or Off
To turn the rear vision camera system on or off:
1. Shift into P (Park).
2. Press the MENU button to enter the configure menu options, then press the MENU hard key to
select Display or touch the Display screen button.
3. Select the Rear Camera Options screen button. The Rear Camera Options screen will display.
4. Select the Video screen button. When the Videoscreen button is highlighted the RVC system is on.
The delay that is received after shifting out of
R (Reverse) is approximately 10 seconds. The delay
can be cancelled by performing one of the following:
.Pressing a hard key on the navigation system.
.Shifting in to P (Park).
.Reach a vehicle speed of 5 mph (8 km/h).
There is a message on the rear vision camera screen
that states “Check Surroundings for Safety”.
3-46

Adjusting the Brightness and Contrast of
the Screen
To adjust the brightness and contrast of the screen,
press the MENU button while the rear vision camera
image is on the display. Any adjustments made will only
affect the rear vision camera screen.
](Brightness) :Touch the + (plus) or –(minus)
screen buttons to increase or decrease the brightness
of the screen.
_(Contrast) : Touch the + (plus) or –(minus) screen
buttons to increase or decrease the contrast of the
screen.
Symbols
The navigation system may have a feature that lets the
driver view symbols on the navigation screen while
using the rear vision camera. The Ultrasonic Rear Park
Assist (URPA) system must not be disabled to use the
caution symbols. If URPA has been disabled and the
symbols have been turned on, the Rear Parking Assist
Symbols Unavailable error message may display. See
Ultrasonic Rear Parking Assist (URPA) on page 3‑43. The symbols appear when an object has been detected
by the URPA system. The symbol may cover the object
when viewing the navigation screen.
To turn the symbols on or off:
1. Make sure that URPA has not been disabled.
2. Shift into P (Park).
3. Press the MENU hard key to enter the configure menu options, then press the MENU hard key
repeatedly until Display is selected or touch the
Display screen button.
4. Select the Rear Camera Options screen button. The Rear Camera Options screen will display.
5. Touch the Symbols screen button. The screen button will be highlighted when on.
Rear Vision Camera Error Messages
Service Rear Vision Camera System : This message
can display when the system is not receiving
information it requires from other vehicle systems.
If any other problem occurs or if a problem persists, see
your dealer/retailer.
3-47

Rear Vision Camera Location
The image is provided by the camera located in the
bezel for the tailgate handle.
The camera uses a special lens. The distance of the
image that appears on the screen differs from the actual
distance. The area displayed by the camera is limited.
The camera does not display objects which are close to
either corner of the bumper or under the bumper. The
area displayed on the screen can vary according to
vehicle orientation or road conditions.The following illustration shows the field of view that the
camera provides.
A. View displayed by the camera.
B. Corner of the rear bumper.
3-48

Disconnecting the Rear Vision Camera
To disconnect the camera:1. Remove the license plate.
2. Disconnect the camera connectors from the chassis harness, located behind the license plate,
by pressing on the release tab on each connector.
A. Chassis harness connector
B. Release tab
C. Camera connector
3. Plug the two exposed chassis harness connectors together to prevent contamination.
A. Chassis harness connector
B. Release tab
4. Feed the wiring harness through the pickup box, then plug the camara connectors together to
prevent contamination.
5. Remove the tailgate. See Tailgate
on page 3‑13for more information.
6. Re‐install the license plate.
Reverse this procedure to reinstall the rear vision
camera and make sure the grommet and connection is
secure.
3-49

When the System Does Not Seem To
Work Properly
The rear vision camera system might not work properly
or display a clear image if:
.The RVC is turned off. See“Turning the Rear
Camera System On or Off” earlier in this section.
.It is dark.
.The sun or the beam of headlights is shining
directly into the camera lens.
.Ice, snow, mud, or anything else builds up on the
camera lens. Clean the lens, rinse it with water,
and wipe it with a soft cloth.
.The back of the vehicle is in an accident, the
position and mounting angle of the camera can
change or the camera can be affected. Be sure to
have the camera and its position and mounting
angle checked at your dealer/retailer. The rear vision camera system display in the rearview
mirror may turn off or not appear as expected due to
one of the following conditions. If this occurs the left
indicator light on the mirror will flash.
.A slow flash may indicate a loss of video signal,
or no video signal present during the reverse cycle.
.A fast flash may indicate that the display has been
on for the maximum allowable time during a
reverse cycle, or the display has reached an Over
Temperature limit.
The fast flash conditions are used to protect the
video device from high temperature conditions.
Once conditions return to normal the device will
reset and the green indicator will stop flashing.
During any of these fault conditions, the display will be
blank and the indicator will continue to flash as long as
the vehicle is in R (Reverse) or until the conditions
return to normal.
Pressing and holding
zwhen the left indicator light is
flashing will turn off the video display along with the left
indicator light.
3-50