Electrical System; Add-On Electrical Equipment; Headlamps; Windshield Wiper Fuses - GMC Envoy 2003 Owner's Manual

Electrical System

Add-On Electrical Equipment

Notice: Don't add anything electrical to your
vehicle unless you check with your dealer first.
Some electrical equipment can damage your vehicle
and the damage wouldn't be covered by your
warranty. Some add-on electrical equipment can
keep other components from working as they
should.
Your vehicle has an air bag system. Before attempting
to add anything electrical to your vehicle, see
Servicing Your Air Bag-Equipped Vehicle on page 1-60 .

Headlamps

The headlamp wiring is protected by four fuses. An
electrical overload will cause a lamp to go on and off. If
this happens, have your headlamp wiring checked
right away.

Windshield Wiper Fuses

The windshield wiper motor is protected by a circuit
breaker and a fuse. If the motor overheats due to heavy
snow or ice, the wiper will stop until the motor cools.
If the overload is caused by some electrical problem, be
sure to get it fixed.
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