Phone

See also:

Transferring Service
Push to request account transfer eligibility information. The Advisor can assist in canceling or removing account information. If OnStar receives information that vehicle ownership has ch ...

LEARN DELAY ACTIVE WAIT XX MIN (MINUTES)
If the vehicle has the keyless access system, this message displays when matching new transmitters to the vehicle. See the Keyless Access information for Remote Keyless Entry (RKE) System O ...

Calling for Service
When calling Roadside Service, have the following information ready: - Your name, home address, and home telephone number. - Telephone number of your location. - Location of the vehicle. - ...