2013 Chevrolet Tahoe Owner Manual - Page 307

Driving and Operating Turning the System On and Off PARK ASSIST OFF: This message occurs if the driver disables the system or if the vehicle is driven above 8 km/h (5 mph) in R (Reverse). PARK ASST BLOCKED SEE OWNERS MANUAL: This message can occur under the following conditions: . 9-49 Other conditions may affect system performance, such as vibrations from a jackhammer or the compression of air brakes on a very large truck. Side Blind Zone Alert (SBZA) If available, the Side Blind Zone Alert system is a lane changing aid that assists drivers with avoiding crashes that occur with vehicles in the side blind zones. Press this button, located next to the radio, to disable URPA. The indicator light comes on and PARK ASSIST OFF displays on the Driver Information Center (DIC). See Object Detection System Messages on page 5‑39. When the System Does Not Seem to Work Properly The following messages may be displayed on the DIC: SERVICE PARK ASSIST: this message occurs, take the vehicle to your dealer for repair. The ultrasonic sensors are not clean. Keep the rear bumper free of mud, dirt, snow, ice, slush, and frost. The message may not clear until frost or ice has melted all around and inside the sensor. A trailer is attached to the vehicle, or a bicycle or an object hanging out of the liftgate during the current or last drive cycle. URPA will return to normal operation after it is determined the object is removed. This could take a few drive cycles. A tow bar is attached to the vehicle. { WARNING SBZA does not detect vehicles rapidly approaching outside of the side blind zones, pedestrians, bicyclists, or animals. Failure to use proper care when changing lanes may result in injury, death, or vehicle damage. Before making a lane change, always (Continued) . .