Onstar.com
The website provides access to account information, manages the OnStar subscription, and allows viewing of videos of each service.
Get subscription plan pricing and sign up for OnStar Vehicle Diagnostics. Click on the “My Account” tab on the home page.
See also:
Side Bolster
To adjust the side bolster support,
if equipped:
- Press the top or bottom of the
control (A) to increase or
decrease support in the seat
cushion bolsters.
- Press the top or bottom of the
...
Customer Assistance for Text Telephone (TTY) Users (U.S. and Canada)
To assist customers who are deaf, hard of hearing, or speech-impaired and
who use Text Telephones (TTYs), Cadillac has TTY equipment available at its
Customer Assistance Center. Any TTY user can com ...
How to Add Coolant to the Surge Tank
WARNING
You can be burned if you spill coolant on hot engine parts. Coolant contains
ethylene glycol and it will burn if the engine parts are hot enough. Do not spill
coolant on a hot engine ...