Add-on Electrical Equipment

The OnStar system is integrated into the electrical architecture of the vehicle. Do not add any electrical equipment. See Add-On Electrical Equipment. Added electrical equipment may interfere with the operation of the OnStar system and cause it to not operate.

    See also:

    Parking Brake
    The vehicle has an Electric Parking Brake (EPB). The switch for the EPB is on the center console. The EPB can always be activated, even if the ignition is off. To prevent draining the battery, avoi ...

    Engine Compartment Fuse Block
    To remove the fuse block cover, squeeze the three retaining clips on the cover and lift it straight up. Notice: Spilling liquid on any electrical component on the vehicle may damage it. Al ...

    All-Wheel Drive
    When to Check Lubricant It is not necessary to regularly check fluid unless you suspect there is a leak or you hear an unusual noise. A fluid loss could indicate a problem. Have it inspected and r ...