Power Windows and Other Power
Options
Circuit breakers protect the power windows and
other power accessories. When the current load is
too heavy, the circuit breaker opens, protecting
the circuit until the problem is xed or goes away.
Fuses and Circuit Breakers
The wiring circuits in your vehicle are protected
from short circuits by a combination of fuses
and circuit breakers. This greatly reduces
the chance of res 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.
Engine Compartment Fuse Block
The engine compartment fuse block is located in
the engine compartment, on the passenger’s
side of the vehicle.
SeeEngine Compartment Overview on page 330
for more information on location.
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Fuses Usage
5 Driver’s Side Headlamp High-Beam
6 Driver’s Side Headlamp Low-Beam
7 Windshield Wiper
8 Automatic Transfer Case
9 Windshield Washer
10 Powertrain Control Module B
11 Fog Lamps
12 Stoplamp
13 Cigarette Lighter
15 Electric Adjustable Pedals
16 Ignition B
18 Airbag System
19 Electric Brake
20 Cooling Fan
21 Horn
22 Ignition E
23 Electronic Throttle ControlFuses Usage
24Instrument Panel Cluster/Driver
Information Center (DIC)
25 Brake Transmission Shift Interlock
26Transmission Control Module (TCM)
Canister
27 Backup
28 Powertrain Control Module 1
29 Oxygen Sensor
30 Air Conditioning
31 Truck Body Controller 1
50 Passenger’s Side Trailer Turn
51 Driver’s Side Trailer Turn
52 Hazard Flashers
53 Headlamp Driver Module
54 Air Injection Reactor Solenoid
57 Ignition A1
59 Regulated Voltage Control
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J-Case Fuses Usage
14 Trailer Stoplamp/Turn Signal
32 Trailer
33 Anti-lock Brake System
34 Ignition A
35 Driver’s Side Headlamp
36 Blower Motor
56 Air Pump
58 Passenger’s Side Headlamp
62Vehicle Stability Enhancement
System (StabiliTrak
®)
Relays Usage
37 Headlamp Washer
38 Rear Windshield Wiper/Washer
39 Fog Lamps
40 Horn
41 Fuel Pump
Relays Usage
42 Windshield Washer
43 High-Beam Headlamp
44 Air Conditioning
45 Cooling Fan
46 Headlamp Driver Module
47 Starter
49 Electric Adjustable Pedals
55 Air Injection Reactor Solenoid
59 Low-Beam Headlamp
60 Ignition 1
61 Powertrain
62Vehicle Stability Enhancement
System (StabiliTrak
®)
Misc. Usage
48 Instrument Panel Battery
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Fuses Usage
5 Driver’s Side Headlamp High-Beam
6 Driver’s Side Headlamp Low-Beam
7 Windshield Wiper
8 Automatic Transfer Case
9 Windshield Washer
10 Powertrain Control Module B
11 Fog Lamps
12 Stoplamp
13 Cigarette Lighter
14 Ignition Coils
15Transmission Control
Module/Canister
16 Ignition B
18 Airbag System
19 Electric Brake
20 Cooling Fan
21 Horn
22 Ignition E
23 Electronic Throttle Control
24Instrument Panel Cluster/Driver
Information CenterFuses Usage
25 Brake Transmission Shift Interlock
26 Engine 1
27 Backup
28 Engine Control Module 1
29 Engine Control Module
30 Air Conditioning
31 Injector Bank A
50 Passenger’s Side Trailer Turn
51 Driver’s Side Trailer Turn
52 Hazard Flashers
53 Transmission
54 Oxygen Sensor B
55 Oxygen Sensor A
56 Injector Bank B
57 Headlamp Driver Module
58 Truck Body Controller 1
59 Electric Adjustable Pedals
61 Ignition A1
66 Regulated Voltage Control
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J-Case Fuses Usage
17 Trailer Turn Signal, Stoplamps
32 Trailer
33 Anti-lock Brake System
34 Ignition A
35 Blower Motor
36 Driver’s Side Headlamp
62 Passenger’s Side Headlamp
65Vehicle Stability Enhancement
System (StabiliTrak
®)
Relays Usage
37 Headlamp Washer
38 Rear Wiper
39 Fog Lamps
40 Horn
41 Fuel Pump
42 Windshield Washer
Relays Usage
43 High-Beam Headlamp
44 Air Conditioning
45 Cooling Fan
46 Headlamp Driver Module
47 Starter
49 Electric Adjustable Pedals
60 Powertrain
63 Low-Beam Headlamp
64 Ignition 1
Misc. Usage
48 Instrument Panel Battery
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Rear Underseat Fuse Block
The rear underseat fuse block is located on the
driver’s side of the vehicle, under the second row
seat. Pull the seat cushion forward to access
the fuse block.
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Fuses Usage
01 Passenger Door Control Module
02 Driver Door Control Module
03 Liftgate Module 2
04 Truck Body Controller 3
05 Blank
06 Blank
07 Truck Body Controller 2
08 Power Seats
09 Rear Wiper
10 Driver Door Module
11 Ampli er
12 Passenger Door Module
13 Blank
14 Driver Side Rear Parking LampsFuses Usage
15 Blank
16Vehicle Center High-Mounted
Stoplamp (CHMSL)
17Passenger Side Rear Parking
Lamps
18 Locks
19 Liftgate Module/Driver Seat Module
20 Blank
21 Locks
23 Blank
24 Unlock
25 Ignition 0
26 Overhead Battery/OnStar
®System
27 Rainsense™ Wipers
28 Sunroof
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(e)Make sure the safety belt reminder light and all
your belts, buckles, latch plates, retractors, and
anchorages are working properly. Look for
any other loose or damaged safety belt system
parts. If you see anything that might keep a safety
belt system from doing its job, have it repaired.
Have any torn or frayed safety belts replaced. Also
look for any opened or broken airbag coverings,
and have them repaired or replaced. The airbag
system does not need regular maintenance.
(f)Lubricate all key lock cylinders, hood latch
assembly, secondary latch, pivots, spring anchor,
release pawl, rear compartment hinges, outer
liftgate handle pivot points, rear door detent link,
roller mechanism, liftgate handle pivot points, latch
bolt, fuel door hinge, cargo door hinge, locks,
and folding seat hardware. More frequent
lubrication may be required when exposed to a
corrosive environment. Applying silicone grease on
weatherstrips with a clean cloth will make them
last longer, seal better, and not stick or squeak.
(g)Inspect hoses for cracks, cha ng, leaks, kinks,
and proper installation.(h)Change automatic transmission uid and lter
if the vehicle is mainly driven under one or
more of these conditions:
In heavy city traffic where the outside
temperature regularly reaches 90°F (32°C)
or higher.
In hilly or mountainous terrain.
When doing frequent trailer towing.
Uses such as found in taxi, police, or delivery
service.
(i)Drain, ush, and re ll cooling system.
This service can be complex; you should have
your dealer perform this service. See Engine
Coolant on page 344 for what to use. Inspect
hoses. Clean radiator, condenser, pressure cap,
and ller neck. Pressure test the cooling
system and pressure cap.
(j)A uid loss in any vehicle system could indicate
a problem. Have the system inspected and repaired
and the uid level checked. Add uid if needed.
(k)If you drive regularly under dusty conditions,
inspect the lter at each engine oil change.
(l)Visually inspect belt for fraying, excessive cracks,
or obvious damage. Replace belt if necessary.
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