See also:

Diagnostics
OnStar Vehicle Diagnostics will perform a vehicle check every month. It will check the engine, transmission, antilock brakes, and major vehicle systems. It also checks the tire pressures, if the v ...

Verify Minutes and Expiration
Push and say “minutes” then “verify” to check how many minutes remain and their expiration date. ...

Vehicle Customization
Some vehicle features can be programmed by using the DIC buttons next to the steering wheel. These features include: Language Door Lock and Unlock Settings RKE Lock and Unlock Feedback Lig ...