2005 Pontiac Montana SV6 Owner's Manual - Page 187

{CAUTION: Even with the Ultrasonic Rear Park Assist system, the driver must check carefully before backing up. The system does not operate above typical backing speeds of 3 mph (5 km/h) while parking. And, the system does not detect objects that are more than 5 feet (1.5 meters) behind the vehicle. So, unless you check carefully behind you before and when you back up, you could strike children, pedestrians, bicyclists or pets behind you, and they could be injured or killed. Whether or not you are using rear park assist, always check carefully behind your vehicle before you back up and then watch closely as you do. URPA can be turned off by pressing the rear park aid disable switch located in the overhead console switchbank. While the system is disabled, an indicator light will be lit on the switch. You will not see any lights on the rear display if the switch is in the off position. 3-23