See also:

Satellite Radio
Vehicles with an XM™ satellite radio tuner and a valid XM satellite radio subscription can receive XM programming. ...

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 ...

Easy Exit Driver Seat
This feature can move the seat rearward to allow extra room to exit the vehicle. (Easy Exit Driver Seat): Press to recall the easy exit seat position. The vehicle must be in P (Park). If the eas ...