See also:

How OnStar Service Works
: This blue button connects you to a specially trained OnStar advisor to verify your account information and to answer questions. : Push this red emergency button to get priority help fro ...

Checking Coolant
The vehicle must be on a level surface when checking the coolant level. Check to see if coolant is visible in the coolant surge tank. If the coolant inside the coolant surge tank is boiling, do not ...

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