See also:

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 ...

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 ...

Competitive Driving Mode
To select this optional handling mode, press the TCS/StabiliTrak button quickly two times and STABILITRAK COMPETITIVE MODE displays in the Driver Information Center (DIC). While in the Sta ...