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 ...

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Climate Controls
The heating, cooling, and ventilation in the vehicle can be controlled with this system. Climate Control with Cooled and Heated Seats shown A. Driver and Passenger Temperature Controls B. AUTO ( ...

Headlamp washers
If the headlamps are on, and there is sufficient liquid in the washer reservoir, operating the screen wash will also power-wash the headlamps. The headlamp power wash will operate on every fifth op ...

Fog Lamps
For vehicles with fog lamps, they can be used for better vision in foggy or misty conditions. The parking lamps and/or low-beam headlamps must be on for the fog lamps to work. The fog lamp button ...