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Fuses Usage
1Electrically Controlled Air
Suspension
2Passenger’s Side Headlamp
High-Beam
3Passenger’s Side Headlamp
Low-Beam
4 Trailer Back-Up
5 Driver’s Side Headlamp High-Beam
6 Driver’s Side Headlamp Low-Beam
7 Washer
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 HornFuses Usage
22 Ignition E
23 Electronic Throttle Control
24Instrument Panel Cluster/Driver
Information Center
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 A
5-103
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J-Case Fuses Usage
17 Trailer Turn Signal, Stoplamp
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 Window Washer
39 Fog Lamps
40 Horn
Relays Usage
41 Fuel Pump
42 Windshield Washer
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.
5-105
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Fuses Usage
01 Right Door Control Module
02 Left Door Control Module
03 Endgate 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 Left Rear Parking Lamps
15 Blank
16Vehicle Center High-Mounted
Stop LampFuses Usage
17 Right 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
29 Accessory
30 Parking Lamps
31 Truck Body Controller Accessory
32 Truck Body Controller 5
33 Front Wipers
34 Ignition 3
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Fuses Usage
35 Vehicle Stop
36 Transmission Control Module
37 Heat Ventilation Air Conditioning B
38 Front Parking Lamps
39 Rear Left Turn Signal
40 Heat, Ventilation, Air Conditioning 1
41 Front Right Turn Signal
42 Radio
43 Trailer Park
44 Rear Right Turn SignalFuses Usage
45 Blank
46 Auxiliary Power 1
47 Blank
48 Ignition 0
49 Not Used
50 Blank
51 Front Left Turn Signal
52 Brakes
53 Truck Body Controller 4
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