2006 Pontiac Montana SV6 Owner's Manual - Page 160

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. If an object is detected at a REVERSE (R) speed of less than 3 mph (5 km/h), one of the following will occur: Description amber light amber/amber lights amber/amber/red lights & continuous chime amber/amber/red lights flashing & continuous chime English 5 ft 40 in 20 in 1 ft Metric 1.5 m 1.0 m 0.5 m 0.3 m How the System Works Unless disabled, the URPA will turn on automatically when the shift lever is moved into REVERSE (R). When the system turns on, the three lights on the display will illuminate for one and a half seconds to let you know that the system is working. If your vehicle is moving in REVERSE (R) at a speed greater than 3 mph (5 km/h), the red light will flash to remind you that the system does not work at speed greater than 3 mph (5 km/h). A chime will sound the first time an object is detected between 20 inches (0.5 m) and 5 feet (1.5 m) away. URPA cannot detect objects that are above liftgate level. In order for the rear sensors to recognize an object, it must be within detection range behind the vehicle. 3-22