Object Detection Systems; Ultrasonic Parking Assist - GMC Yukon XL Denali Owner's Manual

9-42 Driving and Operating
Ending Cruise Control
There are three ways to end cruise
control:
To disengage cruise control,
step lightly on the brake pedal.
Press the button on the
steering wheel.
To turn off the cruise control,
press on the steering wheel.
Erasing Speed Memory
The cruise control set speed is
erased from memory by pressing
the button or if the ignition is
turned off.
Object Detection
Systems

Ultrasonic Parking Assist

If available, the Ultrasonic Rear
Parking Assist (URPA) system uses
sensors on the rear bumper to
assist with parking and avoiding
objects while in R (Reverse).
WARNING
The URPA system does not
detect pedestrians, bicyclists,
animals, or objects below the
bumper or that are too close or
too far from the vehicle. To
prevent injury, death, or vehicle
damage, even with URPA, always
check the area around the vehicle
and check all mirrors before
backing.
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 8 km/h (5 mph).
An obstacle is indicated by audible
beeps. The time between the beeps
gets shorter as the vehicle
approaches the obstacle.
A continuous tone is heard when
the distance is less than
30 cm (12 in).
To be detected, objects must be at
least 25 cm (10 in) off the ground
and below liftgate 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.