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:
Service Publications Ordering Information
Service Manuals
Service Manuals have the diagnosis and repair information on the engines, transmission,
axle, suspension, brakes, electrical, steering, body, etc.
Service Bulletins
Service Bullet ...
Services Specific to Canadian-Purchased Vehicles
Fuel delivery: Reimbursement is approximately $5 Canadian. Diesel fuel
delivery may be restricted. Propane and other fuels are not provided through
this service.
Lock-Out Service: Vehicle r ...
Trailer Sway Control (TSC)
Non-hybrid vehicles with StabiliTrak have a Trailer Sway Control (TSC) feature.
If the vehicle is towing a trailer and the system detects that the trailer is swaying,
the vehicle brakes are applie ...