How The System Works - GMC 2008 Yukon Denali Owner's Manual

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.
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.
If your vehicle has the display, there are three
color-coded lights to provide distance and system
information.
If your vehicle does not have the display and it has
URPA, you will hear the beeps as described in the
following information.

How the System Works

URPA comes on automatically when the shift lever is
moved into REVERSE (R). The rear display will
then briefly illuminate to let you know the system is
working.
URPA operates only at speeds less than 5 mph (8 km/h).
If you are above this speed, the red light on the rear
display will flash.
On some vehicles this
display is located near the
passenger side rear
window and can be seen
by looking over your
right shoulder.
2-45