OnStar Services

See also:

Dome Lamps
There are front and rear dome lamps. The dome lamp controls are located in the overhead console. To change the settings, press the following: (Dome Lamp Override): Turns the lamps off, even whe ...

Satellite Radio
Vehicles with an XM™ satellite radio tuner and a valid XM satellite radio subscription can receive XM programming. XM Satellite Radio Service XM is a satellite radio service based in the 48 contig ...

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 ...