Your vehicle has an airbag system. Before
attempting to add anything electrical to your
vehicle, seeServicing Your Airbag-Equipped
Vehicle on page 112.
Headlamp Wiring
The headlamp wiring is protected by four internal
fuses in the underhood fuse block. An electrical
overload will cause the lamps to go on and off, or
in some cases to remain off. If this happens,
have your headlamp wiring checked right away.
Windshield Wiper Fuses
The windshield wiper motor is protected by an
internal fuse in the underhood fuse block. 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, be
sure to get it xed.
The rear washer pump is controlled by a relay
located in the engine compartment, behind
the windshield washer uid reservoir. The rear
wiper motor is protected by a fuse located in the
instrument panel fuse block.
Power Windows and Other Power
Options
Circuit breakers in the instrument panel fuse panel
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 xed.
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.
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 do not
have a spare fuse, you can borrow one that has
the same amperage or use one of the spare fuses
in the underhood fuse block. 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 right amperage. Replace it
as soon as you can.
527
Fuses Usage
1 Trunk, Door Locks
2 Electronic Level Control
3 Rear Wiper
4 Radio, DVD Player
5 Interior Lamps
6 OnStar
®
7 Keyless Entry Module
8Cluster, Heating, Ventilation, Air
Conditioning
9 Cruise Switch
10 Steering Wheel Illumination
11 Power Mirror
12 Stoplamp, Turn Lamps
13 Heated Seats
14 Blank
15 Electronic Level Control
16 Heated Mirror
17Center High-Mounted Stoplamp,
Back-up Lamps
18 Blank
Fuses Usage
19 Canister Vent Solenoid
20 Park Lamps
21 Power Sliding Door
22 Blank
23 Blank
24 Left Power Sliding Door
25 Right Power Sliding Door
Relays Usage
26 Blank
27 Blank
28 Park Lamps, Taillamps
29 Retained Accessory Power
30 Rear Defog
PLR Fuse Puller
Circuit
BreakersUsage
31 Power Seats
32 Power Window
529
J-Case Fuses Usage
PLR Fuse Puller
29 Fan 1
30 Starter Solenoid
31 Anti-lock Brake System Motor
32 Blank
33 Fan 2
34 Front Blower High
35 Battery Main 3
36 Rear Defogger
37 Battery Main 2
38 Spare
Relays Usage
RUN RLY Starter
LO BEAM Low-Beam
FUEL PUMP Fuel Pump
Relays Usage
HORN Horn
AC/CLTCH Air Conditioning Clutch
HI BEAM High-Beam
PWR/TRN Powertrain
WPR2 Wiper 2
WPR1 Wiper 1
FAN 1 Fan 1
CRNK Crank
IGN MAIN Ignition Main
FAN2 Fan 2
FAN3 Fan 3
BLANK Not Used
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