GMC 2011 Sierra - Manual (Page 372)

Black plate (78,1) GMC Sierra Owner Manual - 2011
9-78 Driving and Operating
. The park assist sensors are
covered by frost or ice. Frost or
ice can form around and behind
the sensors and may not always
be seen; this can occur after
washing the vehicle in cold
weather. The message may
not clear until the frost or ice
has melted.
. A trailer was attached to the
vehicle, or a bicycle or an object
was hanging out of the tailgate
during the last drive cycle. Once
the attached object is removed
and the tailgate is raised, URPA
will return to normal operation.
. A tow bar is attached to the
vehicle.
. The vehicle's bumper is
damaged. Take the vehicle to
your dealer to repair the system.
. Other conditions are affecting
system performance. Examples
of this are vibrations from a
jackhammer or the compression
of air brakes on a very large
truck.
Rear Vision
Camera (RVC)
This vehicle may have a Rear
Vision Camera (RVC) system. Read
this entire section before using it.
{
WARNING
The Rear Vision Camera (RVC)
system does not replace driver
vision. RVC does not:
. Detect objects that are
outside the camera's field
of view, below the bumper,
or underneath the vehicle.
. Detect children, pedestrians,
bicyclists, or pets.
Do not back the vehicle by only
looking at the RVC screen, or use
the screen during longer, higher
(Continued)
WARNING (Continued)
speed backing maneuvers or
where there could be cross-traffic.
Your judged distances using the
screen will differ from actual
distances.
If you do not use proper care
before backing up, you could
hit a vehicle, child, pedestrian,
bicyclist, or pet, resulting in
vehicle damage, injury, or death.
Even though the vehicle has
the RVC system, always check
carefully before backing up by
checking behind and around the
vehicle.