Fuse Box Diagrams Chevrolet TrailBlazer (2002-2005)

In this article, you will find information about the fuses of the Chevrolet TrailBlazer (models 2002, 2003, 2004, and 2005), including diagrams of the fuse boxes, a list of fuses and relays, their designation, and the location of the fuse blocks within the vehicle.

Chevrolet TrailBlazer (2002-2005)

Checking and Replacing Fuses in Chevy TrailBlazer

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 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.

Caution!

Fuses and circuit breakers are marked with their ampere rating. Do not exceed the specified amperage rating when replacing fuses and circuit breakers. Use of an oversized fuse or circuit breaker can result in a vehicle fire.

Location of Fuse Boxes

Rear Underseat Fuse Block:
The rear underseat fuse block is located under the rear seat on the driver’s side of the vehicle.Chevrolet TrailBlazer (2002-2005): Passenger compartment fuse panel location

Engine Compartment Fuse Block:
The fuse block is located under the hood in the engine compartment on the driver’s side of the vehicle. Remove the primary cover by pressing the two locking tabs. Remove the secondary cover by snapping off while lifting. To reinstall the fuse panel cover, reverse the sequence.Chevrolet TrailBlazer (2002-2005): Engine compartment fuse box location


Fuse Box Diagrams

2002

Rear Underseat Fuse Block

Chevrolet TrailBlazer (2002): Passenger compartment fuse panel diagram

List of fuses in the Rear Underseat Fuse Block (2002)
Usage
01Right Door Control Module
02Left Door Control Module
03LGM 2
04TBC 3
05Rear Fog Lamps
06LGM/DSM
07TBC 2
08Power Seats
09Blank
10DDM
11AMP
12PDM
13Rear Climate Controls
14Left Rear Parking Lamps
15Auxiliary Power 2
16VEH CHMSL
17Right Rear Parking Lamps
18LOCKS
19Blank
20Sunroof
21LOCK
23Blank
24UNLOCK
25Blank
26Blank
27OH Battery / OnStar System
29Rainsense Wipers
30Parking Lamps
31TBC 4CC
32TBC 5
33Front Wipers
34VEH STOP
35Blank
36HVAC B
37Front Parking Lamps
38Left Turn Signal
39HVAC 1
40TBC 4
41Radio
42TR PARK
43Right Turn Signal
44HVAC
45Rear Fog Lamps
46Auxiliary Power 1
47Ignition 0
48Four-Wheel Drive
49Blank
50TBC IG
51Brakes
52TBC RUN
Engine Compartment Fuse Block

Chevrolet TrailBlazer (2002): Engine compartment fuse box diagram

List of fuses in the Engine Compartment Fuse Block (2002)
Usage
Mini Fuses
1ECAS
2Passenger’s Side High-Beam Headlamp
3Passenger’s Side Low-Beam Headlamp
4Back-Up Trailer Lamps
5Driver’s Side High-Beam Headlamp
6Driver’s Side Low-Beam Headlamp
7WASH
8ATC
9Windshield Wipers
10Powertrain Control Module B
11Fog Lamps
12ST/LP
13Cigarette Lighter
14COILS
15RIDE
16TBD - Ignition 1
17Crank
18Air Bag
19ELEK Brake
20Cooling Fan
21Horn
22Ignition E
23ETC
24Instrument Panel Cluster, Driver Information Center
25Automatic Shift Lock Control System
26ENG 1
27Back-Up
28Powertrain Control Module 1
29Oxygen Sensor
30Air Conditioning
31TBC
50Passenger’s Side Trailer TRN
51Driver’s Side Trailer TRN
52Hazard Flashers
J-Case Fuses
32Trailer
33Anti-Lock Brakes (ABS)
34Ignition A
35Blower Motor
36Ignition B
Micro Relays
37Blank
38Rear Window Washer
39Fog Lamps
40Horn
41Fuel Pump
42Windshield Wipers/Washer
43High-Beam Headlamp
44Air Conditioning
Solid State Relays
45Cooling Fan
46HDM
Mini Relay
47Starter
Miscellaneous
48Instrument Panel Battery
49Fuse Puller

2003

Rear Underseat Fuse Block

Chevrolet TrailBlazer (2003): Passenger compartment fuse panel diagram

List of fuses in the Rear Underseat Fuse Block (2003)
Usage
01Right Door Control Module
02Left Door Control Module
03Liftgate Module 2
04Truck Body Controller 3
05Rear Fog Lamps
06Liftgate Module / Driver Seat Module
07Truck Body Controller 2
08Power Seats
09Blank
10Driver Door Module
11Amplifier
12Passenger Door Module
13Rear Climate Controls
14Left Rear Parking Lamps
15Auxiliary Power 2
16Vehicle Center High-Mounted Stop Lamp
17Right Rear Parking Lamps
18Locks
19Blank
20Sunroof
21Lock
23Blank
24Unlock
25Blank
26Blank
27OH Battery / OnStar System
29Rainsense Wipers
30Parking Lamps
31Truck Body Controller 4 Cruise Control
32Truck Body Controller 5
33Front Wipers
34Vehicle Stop
35Blank
36Heat Ventilation Air Conditioning B
37Front Parking Lamps
38Left Turn Signal
39Heat Ventilation Air Conditioning 1
40Truck Body Controller 4
41Radio
42Trailer Park
43Right Turn Signal
44Heat Ventilation Air Conditioning
45Rear Fog Lamps
46Auxiliary Power 1
47Ignition 0
48Four-Wheel Drive
49Blank
50Truck Body Controller Ignition
51Brakes
52Truck Body Controller Run
Engine Compartment Fuse Block

L6 EngineChevrolet TrailBlazer (2003): Engine compartment fuse box diagram (L6)

List of fuses in the Engine Compartment Fuse Block (L6) (2003)
Usage
1Electrically-Controlled Air Suspension
2Passenger’s Side High-Beam Headlamp
3Passenger’s Side Low-Beam Headlamp
4Back-Up-Trailer Lamps
5Driver’s Side High-Beam Headlamp
6Driver’s Side Low-Beam Headlamp
7Wash
8Automatic Transfer Case
9Windshield Wipers
10Powertrain Control Module B
11Fog Lamps
12Stop Lamp
13Cigarette Lighter
14Ignition Coils
15Air Suspension Ride
16TBD-Ignition 1
17Crank
18Air Bag
19Electric Brake
20Cooling Fan
21Horn
22Ignition E
23Electronic Throttle Control
24Instrument Panel Cluster, Driver Information Center
25Automatic Shift Lock Control System
26Engine 1
27Back-Up
28Powertrain Control Module 1
29Oxygen Sensor
30Air Conditioning
31Truck Body Controller
32Trailer
33Anti-Lock Brakes (ABS)
34Ignition A
35Blower Motor
36Ignition B
50Passenger’s Side Trailer Turn
51Driver’s Side Trailer Turn
52Hazard Flashers
Relays
37Blank
38Rear Window Washer
39Fog Lamps
40Horn
41Fuel Pump
42Windshield Wipers/Washer
43High-Beam Headlamp
44Air Conditioning
45Cooling Fan
46Headlamp Driver Module
47Starter
Miscellaneous
48Instrument Panel Battery
49Blank

V8 EngineChevrolet TrailBlazer (2003): Engine compartment fuse box diagram (V8)

List of fuses in the Engine Compartment Fuse Block (V8) (2003)
Usage
1Electrically-Controlled Air Suspension
2Passenger’s Side High-Beam Headlamp
3Passenger’s Side Low-Beam Headlamp
4Back-Up-Trailer Lamps
5Driver’s Side High-Beam Headlamp
6Driver’s Side Low-Beam Headlamp
7Wash
8Automatic Transfer Case
9Windshield Wipers
10Powertrain Control Module B
11Fog Lamps
12Stop Lamp
13Cigarette Lighter
14Ignition Coils
15Canister Vent
16TBD-Ignition 1
17Crank
18Air Bag
19Electric Brake
20Cooling Fan
21Horn
22Ignition E
23Electronic Throttle Control
24Instrument Panel Cluster, Driver Information Center
25Automatic Shift Lock Control System
26Engine 1
27Back-Up
28Powertrain Control Module 1
30Air Conditioning
31Truck Body Controller
32Trailer
33Anti-Lock Brakes (ABS)
34Ignition A
35Blower Motor
36Ignition B
50Passenger’s Side Trailer Turn
51Driver’s Side Trailer Turn
52Hazard Flashers
53Oxygen Sensor Bank A
54Oxygen Sensor Bank B
55Injector Bank A
56Injector Bank B
Relays
37Headlamp Washer
38Rear Window Washer
39Fog Lamps
40Horn
41Fuel Pump
42Windshield Wipers/Washer
43High-Beam Headlamp
44Air Conditioning
45Cooling Fan
46Headlamp Driver Module
47Starter
58Ignition 1
Miscellaneous
48Instrument Panel Battery

2004

Rear Underseat Fuse Block

Chevrolet TrailBlazer (2004): Passenger compartment fuse panel diagram

List of fuses in the Rear Underseat Fuse Block (2004)
Usage
01Right Door Control Module
02Left Door Control Module
03Liftgate Module 2
04Truck Body Controller 3
05Rear Fog Lamps
06Blank
07Truck Body Controller 2
08Power Seats
09Rear Wiper
10Driver Door Module
11Amplifier
12Passenger Door Module
13Rear Climate Controls
14Left Rear Parking Lamps
15Blank
16Vehicle Center High-Mounted Stop Lamp
17Right Rear Parking Lamps
18Locks
19Liftgate Module / Driver Seat Module
20Sunroof
21Lock
23Blank
24Unlock
25Blank
26Blank
27OH Battery / OnStar System
29Rainsense Wipers
30Parking Lamps
31Truck Body Controller Accessory
32Truck Body Controller 5
33Front Wipers
34Vehicle Stop
35Blank
36Heat Ventilation Air Conditioning B
37Front Parking Lamps
38Left Turn Signal
39Heat Ventilation Air Conditioning 1
40Truck Body Controller 4
41Radio
42Trailer Park
43Right Turn Signal
44Heat Ventilation Air Conditioning
45Rear Fog Lamps
46Auxiliary Power 1
47Ignition 0
48Four-Wheel Drive
49Blank
50Truck Body Controller Ignition
51Brakes
52Truck Body Controller Run
Engine Compartment Fuse Block

L6 EngineChevrolet TrailBlazer (2004): Engine compartment fuse box diagram (L6)

List of fuses in the Engine Compartment Fuse Block (L6) (2004)
Usage
1Electrically-Controlled Air Suspension
2Passenger’s Side High-Beam Headlamp
3Passenger’s Side Low-Beam Headlamp
4Back-Up-Trailer Lamps
5Driver’s Side High-Beam Headlamp
6Driver’s Side Low-Beam Headlamp
7Rear Window Washer, Headlamp Washer
8Automatic Transfer Case
9Windshield Washer
10Powertrain Control Module B
11Fog Lamps
12Stop Lamp
13Cigarette Lighter
14Ignition Coils
15Blank
16TBC-Ignition 1
17Crank
18Air Bag
19Trailer Electric Brake
20Cooling Fan
21Horn
22Ignition E
23Electronic Throttle Control
24Instrument Panel Cluster, Driver Information Center
25Automatic Shift Lock Control System
26Backup
27Engine 1
28Powertrain Control Module 1
29Oxygen Sensor
30Air Conditioning
31Truck Body Controller
32Trailer
33Anti-Lock Brakes (ABS)
34Ignition A
35Blower Motor
36Ignition B
50Passenger’s Side Trailer Turn
51Driver’s Side Trailer Turn
52Hazard Flashers
53Electric Adjustable Pedal
54A.I.R. Solenoid
56A.I.R. Pump
Relays
37Headlamp Washer
38Rear Window Washer
39Fog Lamps
40Horn
41Fuel Pump
42Windshield Washer
43High-Beam Headlamp
44Air Conditioning
45Cooling Fan
46Headlamp Driver Module
47Starter
49Electric Adjustable Pedal
55A.I.R. Solenoid
Miscellaneous
48Instrument Panel Battery
49Blank

V8 EngineChevrolet TrailBlazer (2004): Engine compartment fuse box diagram (V8)

List of fuses in the Engine Compartment Fuse Block (V8) (2004)
Usage
1Electrically-Controlled Air Suspension
2Passenger’s Side High-Beam Headlamp
3Passenger’s Side Low-Beam Headlamp
4Back-Up-Trailer Lamps
5Driver’s Side High-Beam Headlamp
6Driver’s Side Low-Beam Headlamp
7Rear Window Washer, Headlamp Washer
8Automatic Transfer Case
9Windshield Washer
10Powertrain Control Module B
11Fog Lamps
12Stop Lamp
13Cigarette Lighter
14Ignition Coils
15Canister Vent
16TBC-Ignition 1
17Crank
18Air Bag
19Trailer Electric Brake
20Cooling Fan
21Horn
22Ignition E
23Electronic Throttle Control
24Instrument Panel Cluster, Driver Information Center
25Automatic Shift Lock Control System
26Backup
27Engine 1
28Powertrain Control Module 1
30Air Conditioning
31Truck Body Controller
32Trailer
33Anti-Lock Brakes (ABS)
34Ignition A
35Blower Motor
36Ignition B
50Passenger’s Side Trailer Turn
51Driver’s Side Trailer Turn
52Hazard Flashers
53Oxygen Sensor Bank B
54Oxygen Sensor Bank A
55Injector Bank A
56Injector Bank B
57Electric Adjustable Pedal
Relays
37Headlamp Washer
38Rear Window Washer
39Fog Lamps
40Horn
41Fuel Pump
42Windshield Washer
43High-Beam Headlamp
44Air Conditioning
45Cooling Fan
46Headlamp Driver Module
47Starter
49Electric Adjustable Pedal
58Ignition 1
Miscellaneous
48Instrument Panel Battery

2005

Rear Underseat Fuse Block

Chevrolet TrailBlazer (2005): Passenger compartment fuse panel diagram

List of fuses in the Rear Underseat Fuse Block (2005)
Usage
01Right Door Control Module
02Left Door Control Module
03Liftgate Module 2
04Truck Body Controller 3
05Rear Fog Lamps
06Blank
07Truck Body Controller 2
08Power Seats
09Rear Wiper
10Driver Door Module
11Amplifier
12Passenger Door Module
13Rear Climate Controls
14Left Rear Parking Lamps
15Blank
16Vehicle Center High-Mounted Stop Lamp
17Right Rear Parking Lamps
18Locks
19Liftgate Module / Driver Seat Module
20Blank
21Lock
23Blank
24Unlock
25Blank
26Blank
27OnStar Overhead Battery, OnStar System
28Sunroof
29Rainsense Wipers
30Parking Lamps
31Truck Body Controller Accessory
32Truck Body Controller 5
33Front Wipers
34Vehicle Stop
35Transmission Control Module
36Heat Ventilation Air Conditioning B
37Front Parking Lamps
38Left Turn Signal
39Heat Ventilation Air Conditioning 1
40Truck Body Controller 4
41Radio
42Trailer Park
43Right Turn Signal
44Heat Ventilation Air Conditioning
45Rear Fog Lamps
46Auxiliary Power 1
47Ignition 0
48Four-Wheel Drive
49Blank
50Truck Body Controller Ignition
51Brakes
52Truck Body Controller Run
Engine Compartment Fuse Block

L6 EngineChevrolet TrailBlazer (2005): Engine compartment fuse box diagram (L6)

List of fuses in the Engine Compartment Fuse Block (L6) (2005)
Usage
1Electrically-Controlled Air Suspension
2Passenger’s Side High-Beam Headlamp
3Passenger’s Side Low-Beam Headlamp
4Back-Up Trailer Lamps
5Driver’s Side High-Beam Headlamp
6Driver’s Side Low-Beam Headlamp
7Rear Window Washer, Headlamp Washer
8Automatic Transfer Case
9Windshield Washer
10Powertrain Control Module B
11Fog Lamps
12Stoplamp
13Cigarette Lighter
14Ignition Coils
15Electric Adjustable Pedal
16Truck Body Controller, Ignition 1
17Crank
18Airbag
19Trailer Electric Brake
20Cooling Fan
21Horn
22Ignition E
23Electronic Throttle Control
24Instrument Panel Cluster, Driver Information Center
25Automatic Shift Lock Control System
26Engine 1
27Backup
28Powertrain Control Module 1
29Oxygen Sensor
30Air Conditioning
31Truck Body Controller
32Trailer
33Anti-Lock Brakes (ABS)
34Ignition A
35Blower Motor
36Ignition B
50Passenger’s Side Trailer Turn
51Driver’s Side Trailer Turn
52Hazard Flashers
53Headlamp Driver Module
54Air Injection Reactor (AIR) Solenoid
56Air Injection Reactor (AIR) Pump
Relays
37Headlamp Washer
38Rear Window Washer
39Fog Lamps
40Horn
41Fuel Pump
42Windshield Washer
43High-Beam Headlamp
44Air Conditioning
45Cooling Fan
46Headlamp Driver Module
47Starter
49Electric Adjustable Pedal
55Air Injection Reactor (AIR) Solenoid
Miscellaneous
48Instrument Panel Battery

V8 EngineChevrolet TrailBlazer (2005): Engine compartment fuse box diagram (V8)

List of fuses in the Engine Compartment Fuse Block (V8) (2005)
Usage
1Electrically-Controlled Air Suspension
2Passenger’s Side High-Beam Headlamp
3Passenger’s Side Low-Beam Headlamp
4Back-Up-Trailer Lamps
5Driver’s Side High-Beam Headlamp
6Driver’s Side Low-Beam Headlamp
7Rear Window Washer, Headlamp Washer
8Automatic Transfer Case
9Windshield Washer
10Powertrain Control Module B
11Fog Lamps
12Stop Lamp
13Cigarette Lighter
14Ignition Coils
15Canister Vent
16Truck Body Controller, Ignition 1
17Crank
18Airbag
19Trailer Electric Brake
20Cooling Fan
21Horn
22Ignition E
23Electronic Throttle Control
24Instrument Panel Cluster, Driver Information Center
25Automatic Shift Lock Control System
26Engine 1
27Backup
28Powertrain Control Module 1
29Powertrain Control Module
30Air Conditioning
31Injector Bank A
32Trailer
33Anti-Lock Brakes (ABS)
34Ignition A
35Blower Motor
36Ignition B
50Passenger’s Side Trailer Turn
51Driver’s Side Trailer Turn
52Hazard Flashers
53Transmission
54Oxygen Sensor Bank B
55Oxygen Sensor Bank A
56Injector Bank B
57Headlamp Driver Module
58Body Controller 1
59Electric Adjustable Pedal
Relays
37Headlamp Washer
38Rear Window Washer
39Fog Lamps
40Horn
41Fuel Pump
42Windshield Washer
43High-Beam Headlamp
44Air Conditioning
45Cooling Fan
46Headlamp Driver Module
47Starter
49Electric Adjustable Pedal
60Powertrain
Miscellaneous
48Instrument Panel Battery