See also:

Getting Started on Your Route
Once a destination has been entered, there are several functions that can be performed. Press DEST to access the Route screen. Turn List Press to view the list of turn maneuvers for the entire ...

Doing Your Own Service Work
If the vehicle is a hybrid, see the hybrid supplement for more information. WARNING It can be dangerous to work on your vehicle if you do not have the proper knowledge, service manual, tools, ...

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 ...