2011 Chevrolet Avalanche Owner's Manual - Page 328

9-60 . 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 system. Read this entire section before using it. WARNING (Continued) 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. { 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 speed backing maneuvers or where there could be cross-traffic. (Continued)