See also:

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 ...

OnStar®
OnStar® uses several innovative technologies and live advisors to provide a wide range of safety, security, navigation, diagnostics, and calling services. ...

Adding Equipment to Your Airbag-Equipped Vehicle
Q: Is there anything I might add to the front or sides of the vehicle that could keep the airbags from working properly? A: Yes. If you add things that change your vehicle’s frame, bumper system ...