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:

Rear media settings
The rear media settings screen allows Limousine Mode to be turned on or off. When Limousine Mode is selected, the rear passengers can control the total cabin audio system via the remote control. ...

Auto high beam
This feature automatically selects and deselects high beam, under specific conditions of road lighting and in the absence of other vehicle’s lights. The system is only active when the ambient li ...

Cruise Control
WARNING Cruise control can be dangerous where you cannot drive safely at a steady speed. So, do not use the cruise control on winding roads or in heavy traffic. Cruise control can be dangerous ...