Your Responsibility
Increase the volume of the radio if the OnStar Advisor cannot be heard.
If the light next to the OnStar buttons is red, the system may not be functioning properly. Push 
and request a vehicle diagnostic check. If the light appears clear (no light appears), your OnStar subscription has expired and all services have been deactivated.
Push to confirm that the OnStar equipment is active.
See also:
Taillamps, Turn Signal, Stoplamps and Sidemarker Lamps
A. Sidemarker Lamp
B. Stoplamp/Taillamp/Turn Signal Lamp
To replace one of these bulbs:
1. Open the trunk. See Trunk.
2. Remove the convenience net.
3. Remove the plastic wing nuts retaining th ...
Roadside Assistance Program
U.S.: 1-800-252-1112
TTY Users: 1-888-889-2438
Canada: 1-800-268-6800
As the owner of a new Buick, you are automatically enrolled in the Roadside Assistance program.
See Roadside Assistance Pr ...
Climate Controls
The heating, cooling, defrosting, and ventilation for the vehicle can be controlled
with these systems. ...