See also:

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 ...

Security Light
The immobilizer light should come on briefly as the engine is started. If it does not come on, have the vehicle serviced by your dealer. If the system is working normally, the indicator ligh ...

Speed and Curve Assist
This display will show the speed limit or the advised speed as determined by the information provided by the navigation system. The map database loaded in the navigation system may need to be upda ...