See also:

Rear Window Lockout
Rear Window Lockout This feature prevents the rear passenger windows from operating, except from the driver position. Press o to activate the rear window lockout switch. The LED (A) comes ...

Vehicle and Power Issues
OnStar services require a vehicle electrical system, wireless service, and GPS satellite technologies to be available and operating for features to function properly. These systems may not o ...

How the System Works
URPA comes on automatically when the shift lever is moved into R (Reverse). The rear display briefly illuminates to indicate the system is working. URPA operates only at speeds less than 8 km/h ...