OnStar Services

See also:

Ignition Positions
The ignition has four different positions: In order to shift out of P (Park), ignition must be in the ON/RUN and the regular brake pedal must be applied. Notice: Using a tool to force the key to ...

How to Add Coolant to the Radiator
1. You can remove the radiator pressure cap when the cooling system, including the radiator pressure cap and upper radiator hose, is no longer hot. Turn the pressure cap slowly counterclockwis ...

Add-On Electrical Equipment
Notice: Do not add anything electrical to your vehicle unless you check with your dealer first. Some electrical equipment can damage your vehicle and the damage would not be covered by your warran ...