See also:

Trip/Fuel Menu Items
(Trip/Fuel): Press this button to scroll through the following menu items: ODOMETER Press the trip/fuel button until ODOMETER displays. This display shows the distance the vehicle has been driven i ...

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), GMC has TTY equipment available at its Customer Assistance Center. Any TTY user can communicat ...

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 vehic ...