See also:

Turning the System On and Off
The URPA system can be turned on and off using the rear park aid disable button located next to the radio. The indicator light comes on when the system is disabled and turns off when the system is ...

Hydraulic Power Steering
Your vehicle has hydraulic power steering. It may require maintenance. See Power Steering Fluid on page 10‑21. If power steering assist is lost due to a system malfunction, the vehicle can be s ...

Diagnostics
OnStar Vehicle Diagnostics will perform a vehicle check every month. It will check the engine, transmission, antilock brakes, and major vehicle systems. It also checks the tire pressures, if the v ...