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 ...

Testing the Alarm
To test the alarm: 1. From inside the vehicle, lower the driver window and open the driver door. 2. Activate the system by locking the doors with the power door lock switch while the door is open, ...

Replacing LATCH System Parts After a Crash
WARNING A crash can damage the LATCH system in the vehicle. A damaged LATCH system may not properly secure the child restraint, resulting in serious injury or even death in a crash. To help make ...