Hummer 2008 H2 User Manual download pdf (Page 446)

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101

Electrical System

Add-On Electrical Equipment

Notice: Do not add anything electrical to your

vehicle unless you check with your dealer/retailer

ﬁrst. Some electrical equipment can damage your

vehicle and the damage would not be covered by

your warranty. Some add-on electrical equipment can

keep other components from working as they should.

Add-on equipment can drain your vehicle’s battery,

even if your vehicle is not operating.

Your vehicle has an airbag system. Before attempting to

add anything electrical to your vehicle, see Servicing

Your Airbag-Equipped Vehicle on page 1-75.

Windshield Wiper Fuses

The windshield wiper motor is protected by a circuit

breaker and a fuse. If the motor overheats due to heavy

snow, etc., the wiper will stop until the motor cools.

If the overload is caused by some electrical problem,

have it ﬁxed.

Power Windows and Other

Power Options

Circuit breakers in the fuse block protect the power

windows and other power accessories. When the current

load is too heavy, the circuit breaker opens and closes,

protecting the circuit until the problem is ﬁxed or

goes away.

Fuses and Circuit Breakers

The wiring circuits in your vehicle are protected from

short circuits by a combination of fuses, circuit breakers

and fusible thermal links. This greatly reduces the

chance of ﬁres caused by electrical problems.

Look at the silver-colored band inside the fuse. If the

band is broken or melted, replace the fuse. Be sure you

replace a bad fuse with a new one of the identical size

and rating.

If you ever have a problem on the road and don’t have

a spare fuse, you can borrow one that has the same

amperage. Just pick some feature of your vehicle

that you can get along without – like the radio or

cigarette lighter – and use its fuse, if it is the correct

amperage. Replace it as soon as you can.

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Hummer 2008 H2 User Manual Page 446

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