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:

    Audio Steering Wheel Controls
    If your vehicle has this feature, some audio functions can be adjusted at the steering wheel. They include the following: (OnStar®/Mute): If your vehicle has OnStar, press this button to i ...

    Turn and Lane-Change Signals
    The turn signal has two upward (for right) and two downward (for left) positions. These positions let you signal a turn or a lane change. To signal a turn, move the lever all the way up or down. ...

    Hydraulic Power Steering
    If your vehicle has hydraulic power steering, it may require maintenance. See Power Steering Fluid (2.4L L4 Engine) or Power Steering Fluid (3.6L V6 Engine). If power steering assist is lost ...