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 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 beeping is a continuous tone for five seconds.
To be detected, objects must be at least 20 cm (8 in) off the ground and below liftgate level. Objects must also be within 2.5 m (8 ft) from the rear bumper. The distance objects can be detected may be less during warmer or humid weather.
See also:
Exterior
Painted black and trimmed in chrome, my Yukon Denali test vehicle looked more
like its Escalade corporate cousin than a tough truck. The Yukon is probably the
safest-looking of the three siblings, ...
Rear Window Defogger
REAR (Rear Defogger): Press to turn
the rear window defogger on or off. The rear window defogger turns off after about
10 minutes. It can also be turned off by turning the ignition to ACC/ACCESSO ...
Engine Air Cleaner/Filter
When to Inspect the Engine Air Cleaner/Filter
Inspect the air cleaner/filter at the scheduled maintenance intervals and replace it at the first oil change after each 80 000 km (50,000 mi) interval. S ...





