Chevrolet 2009 Silverado, Owner'S Manual

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The display is located near
the passenger side rear
window and can be seen by
looking over your right
shoulder.
URPA uses three color-coded lights to provide distance
and system information.
How the System Works
URPA comes on automatically when the shift lever is
moved into R (Reverse). The rear display briefly
illuminates to indicate the system is working.
URPA operates only at speeds less than 5 mph
(8 km/h). If the vehicle is above this speed, the red light
on the rear display will flash.
To be detected, objects must be at least 10 inches
(25.4 cm) off the ground and below tailgate level.
Objects must also be within 8 feet (2.5 m) from the rear
bumper. This distance may be less during warmer or
humid weather.
A single beep will sound the first time an object is
detected between 40 inches (1 m) and 8 feet (2.5 m)
away. Beeping will occur continuously when the vehicle
is at 23 inches (0.6 m) or closer to an object.
The following describes what will occur with the URPA
display as the vehicle gets closer to a detected
object:
Description English Metric
amber light 8 ft 2.5 m
amber/amber lights 40 in 1.0 m
amber/amber/red lights
and continuous beeping
for five seconds
23 in 0.6 m
amber/amber/red lights
flashing and continuous
beeping for five seconds
1 ft 0.3 m
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