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 ...

Customer Assistance for Text Telephone (TTY) Users
To assist customers who are deaf, hard of hearing, or speech-impaired and who use Text Telephones (TTYs), Buick has TTY equipment available at its Customer Assistance Center. Any TTY user can communic ...

Dome Lamp Override
The dome override button is located below the exterior lamps knob. To turn the dome lamps off, press the button. The dome lamps will remain off when a door is open. This will override the ill ...