See also:

Traction Control System (TCS)
The vehicle may have a traction control system that limits wheel spin. The system turns on automatically every time the vehicle is started. ► To turn off traction control, press and release the ...

Filling the Tank
WARNING: Fuel vapor burns violently and a fuel fire can cause bad injuries. To help avoid injuries to you and others, read and follow all the instructions on the fuel pump island. Turn off the ...

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 ...