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.

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    Two-Wheel-Drive Vehicles
    Dinghy Towing Notice: If a two-wheel-drive vehicle is towed with all four wheels on the ground, the transmission could be damaged. The repairs would not be covered by the vehicle warranty. Do n ...

    Folding Mirrors
    Manual Vehicles with manual fold mirrors are folded inward toward the vehicle to prevent damage when going through an automatic car wash. Push the mirror outward, to return it to the origina ...

    Radio(s)
    VOL/ : Press to turn the system on and off. Turn to increase or decrease the volume. FM/AM: Press to select between FM or AM. : Press to select XM™, if equipped. TUNE/TONE: Turn to select ...