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:
Customer Assistance Offices (U.S. and Canada)
Cadillac encourages customers to call the toll-free number for assistance. However,
if a customer wishes to write or e-mail Cadillac, the letter should be addressed
to:
United States
Cadillac Cu ...
Jump Starting
For more information about the
vehicle battery, see Battery.
If the vehicle battery has run down,
you may want to use another
vehicle and some jumper cables to
start your vehicle. Be sure to ...
Parking
(Manual Transmission)
Before getting out of the vehicle,
place the shift lever in R (Reverse)
and firmly apply the parking brake.
For vehicles with the key access
ignition, turn the ignition key to
OFF/LOCK, and r ...