See also:

Remote Vehicle Start
With this feature the engine can be started from outside of the vehicle. ...

Trip/Fuel Menu Items (with DIC Buttons)
(Trip/Fuel): Press this button to scroll through the following menu items: ...

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 ...