See also:

How OnStar Service Works
Automatic Crash Response, Emergency Services, Crisis Assist, Stolen Vehicle Assistance, Vehicle Diagnostics, Remote Door Unlock, Roadside Assistance, Turn-by-Turn Navigation, and Hands-Free ...

Skidding
There are three types of skids that correspond to the vehicle's three control systems: Braking Skid — wheels are not rolling. Steering or Cornering Skid — too much speed or steering in a c ...

Automatic Transmission
If the vehicle is a hybrid, see the hybrid supplement for more information. The vehicle has a Hydra-Matic® 6L80 automatic transmission, and has an electronic shift position indicator within the ins ...