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 veh ...

OnStar Additional Information

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 owne ...

See also:

Entering follow mode
WARNING When in follow mode, the vehicle will not decelerate automatically to a stop, nor will the vehicle always decelerate quickly enough to avoid a collision. Note: Follow mode is an integ ...

Using the trip computer
A short press (1 second or less) or a series of short presses of the i button will change the trip computer display. The options available are: • Date and Odometer. • Trip distance. †...

Front fog lamps and rear fog lamp
Front fog lamps Only vehicles with front fog lamps have the "fog lamps" function. WARNING   If you suspect that driving conditions will be foggy, turn the light switch to b ...