See also:

Heated Seats
Your vehicle may have heated front seats. The buttons used to control this feature are located on the front door armrests. The engine must be running for the heated seat feature to work. ...

StabiliTrak® Service Light
This light will come on briefly when the engine is started. This light will come on if a problem is detected in the StabiliTrak® system. ...

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 ...