Owner's Manual

The first time an object is detected while in
REVERSE (R), a chime will sound and the
following will occur in sequence, depending on the
distance from the object:
• At 5 feet (1.5 m) a chime will sound and
one amber light will be lit.
• At 40 inches (1.0 m) both amber lights will
be lit.
• At 20 inches (0.5 m) a continuous chime will
sound and all three lights (amber/amber/red)
will be lit.
• At 1 foot (0.3 m) a continuous chime will
sound and all three lights (amber/amber/red)
will flash.
URPA can detect objects 3 inches (7.6 cm) and
wider, and at least 10 inches (25.4 cm) tall,
but it cannot detect objects that are above trunk
level. In order for the rear sensors to recognize an
object, it must be within operating range.
If the URPA system is not functioning properly, the
display will flash red, indicating that there is a
problem. The light will also flash red while driving if
a trailer is attached to your vehicle, or a bicycle or
object is on the back of, or hanging out of your
trunk. The light will continue to flash until the trailer
or the object is removed and your vehicle is driven
forward at least 15 mph (25 km/h).
It may also flash red if the ultrasonic sensors are
not kept clean. So be sure to keep your rear
bumper free of mud, dirt, snow, ice and slush or
materials such as paint or the system may
not work properly. If after cleaning the rear bumper
and driving forward at least 15 mph (25 km/h),
the display continues to flash red, see your
GM dealer. For cleaning instructions, see Washing
Your Vehicle on page 442.
It may also flash red if your vehicle is moving in
REVERSE (R) at a speed greater than 3 mph
(5 km/h). Other conditions that may affect system
performance include things like the vibrations
from a jackhammer or the compression of
airbrakes on a very large truck.
As always, drivers should use care when backing
up a vehicle. Always look behind you, being
sure to check for other vehicles, obstructions and
blind spots.
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