Add-On Electrical Equipment

Notice: Do not add anything electrical to the vehicle unless you check with your dealer first.

Some electrical equipment can damage the vehicle and the damage would not be covered by the vehicle's warranty. Some add-on electrical equipment can keep other components from working as they should.

Add-on equipment can drain the vehicle's 12-volt battery, even if the vehicle is not operating.

The vehicle has an airbag system.

Before attempting to add anything electrical to the vehicle, see Servicing the Airbag-Equipped Vehicle on page 3‑40 and Adding Equipment to the Airbag-Equipped Vehicle on page 3‑40.

    See also:

    Unable to Connect to OnStar Message
    If there is limited cellular coverage or the cellular network has reached maximum capacity, this message may come on. Push Q to try the call again or try again after driving a few miles into anoth ...

    Bulb Replacement
    For the proper type of replacement bulbs, see Replacement Bulbs on page 10‑29. For any bulb-changing procedure not listed in this section, contact your dealer. ...

    Traction Off Light
    This light comes on briefly while starting the engine. If it does not, have the vehicle serviced by your dealer. If the system is working normally, the indicator light then turns off. The tract ...