Diesel Engine Fire Pump Controller Wiring Diagram

Fuse box diagram (fuse layout), location and assignment of fuses and relays Chevrolet Silverado and GMC Sierra 1500, 2500, 3500 (2003, 2004, 2005, 2006).

Chevrolet Silverado (2003-2006)

GMC Sierra (2003-2006)

Checking and Replacing Fuses

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.

Note

  • Before replacing a fuse check that the key has been removed from the ignition and that all the services are switched off and/or disengaged.
  • Do not repair fuses and never replace a blown fuse with one that has a higher amp rating. This can cause damage to the electrical system and fire.
  • Never replace a broken fuse with anything other than a new fuse. Use always an intact fuse of the same color.
  • If a fuse blows again contact a qualified service center.

Passenger Compartment Fuse Box

The fuse block access door is on the driver's side edge of the instrument panel. Pull off the cover to access the fuse block. To remove fuses, hold the end of the fuse between your thumb and index finger and pull straight out.

You may have spare fuses located behind the fuse block access door. These can be used to replace a bad fuse. However, make sure it is of the correct amperage.

Passenger Compartment Fuse Box Location

Passenger Compartment Fuse Box Diagram

A Protected Component
1 -  -
2 10 HVAC Components, Electronic Suspension Control (ESC) Components, Heated Seat Modules (Rear), Wheel Steering
3 15 Front Axle Actuator, Transfer Case Shift Control Switch, Auxiliary Battery
4 10 Passlock Sensor, Transmission Control Module (TCM), Powertrain Control Module (PCM)
5 15 Stop Lamps, Brake Module, Throttle Actuator Control
6 15 Driver Door Module (DDM)
7 10 HVAC Control Assembly (Rear Auxiliary)
8 10 Upfitter Provisions
9 30 HVAC Control Module
10 10 HVAC Control Module, HVAC Actuators
11 10 Cruise Control Switch, Steering Wheel Speed/Position Sensor, Power Take Off (PTO)
12 10 Stop Lamp Switch, Electronic Brake Control Module (EBCM), Traction Control Switch
13 10 Body Control Module (BCM)
14 10 Center High Mounted Stop Lamp (CHMSL)
15 25 Windshield Wiper Motor Module
16 10 Body Control Module (BCM)
17 10 Left Turn Signal/Stop Trailer
18 10 Right Turn Signal/Stop Trailer
19 20 Power Outlet (D-Pillar)
20 15 Body Control Module (BCM)
21 15 Body Control Module (BCM)
22 10 Left Turn Signals and Side Markers Lamps, Instrument Panel Cluster, Driver Door Module (DDM)
23 10 Right Turn Signals and Side Markers Lamps, Instrument Panel Cluster, Front Passenger Door Module (FPDM)
24 20 Door Lock/Unlock Relay
25 25 Turn Signal/Hazard Flasher Module
26 15 Body Control Module (BCM)
27 10 Front Passenger Door Module (FPDM)
Circuit Breaker
CB1 25 Left Rear Power Window and Driver Door Module
Relay
R1 Power Door Lock
R2 Power Door Unlock
R4  -
R5 Rear Fog Lamps

Center Instrument Panel Fuse Block

The center instrument panel utility block is located underneath the instrument panel, to the left of the steering column.

Center Instrument Panel Fuse Block

A Circuit Breaker
CB1 30 Driver and Passenger Seat Module, Memory Seat Module
CB2 25 Front Passenger Door Module (FPDM), Right Rear Power Window
Relay
R1 Rear Window Defogger
R2  -

Underhood Fuse Box

The underhood fuse block in the engine compartment on the driver's side of the vehicle near the battery. Lift the cover for access to the fuse/relay block. To remove fuses hold the end of the fuse between your thumb and index finger and pull straight out.

Underhood Fuse Box Location

Engine Compartment Fuse Box Diagram

A Protected Component
1 40 Trailer Wiring, Automatic Level Control (ALC) Compressor Relay
2 -  -
3 50 Circuit Breaker (Passenger Compartment Relay Box): "CB1", "CB2"
4 40 Blower Motor
5 50 Fuse (Passenger Compartment): "6", "19", "24" "27"
6 30 Off Road Lamps, Trailer Wiring
7 60 ABS
8 60 Electronic Brake Control Module (EBCM)
9 40 Ignition Switch
10 -  -
11 40 Ignition Switch
12 50 Fuse (Passenger Compartment): "20", "21", "25" "26", "CB1"
13 15 Parking Lamps Trailer Wiring
14 10 Right Rear Parking and Side Marker Lamps
15 10 Left Rear Parking and Side Marker Lamps
16 10 Interior Lamps, Power Take Off Switch, Inflatable Restraint I/P Module Disable Switch, HD Trailering Equipment Provisional
17 25 Stop Lamp Switch
18 10 Body Control Module (BCM)
19 25 Sunroof Relay
20 30 Roof Beacon Relay, Off-Road Lamps
21 15 Rear Wheel Steering Control Module, Evaporative Emission (EVAP) Canister Vent Solenoid
22 30 HVAC Control Assembly (Rear Auxiliary)
23 20 Accessory Power Outlets, Auxiliary Power Outlets
24 15 Powertrain Control Module (PCM), Mass Air Flow (MFS) Sensor, Evaporative Emission (EVAP) Canister Purge Solenoid, Fuel Composition Sensor, Secondary Fuel Pump Relay
25 15 Throttle Actuator Control (TAC), Electronic Brake Controller
26 15 Gasoline: Odd: Ignition Coils, Fuel Injectors
15 Diesel: Engine Control Module (ECM)
27 15 Gasoline: Even: Ignition Coils, Fuel Injectors
25 Diesel: Engine Control Module (ECM)
28 10 A/C Compressor Relay, Park/Neutral Position (PNP) Swtich, Turn Signal/Multifunction Switch, Headlamp Leveling Components, Instrument Panel Cluster, Clutch Start Switch
29 30 Automatic Level Control (ALC) Compressor, Electronic Suspension Control (ESC) Module
30 10 Backup Lamps Trailer Wiring
31 20 Gasoline: Powertrain Control Module, Fuel Pump
20 Diesel: Engine Control Module (ECM)
32 15 Gasoline: Oxygen Sensors
15 Diesel: Fuel Heater, Glow Plug Controller, Intake Air Heater Relay, EGR System
33 20 Backup Lamps, Park/Neutral Position Switch (PNP)
34 30 Rear Window Defogger Relay
35 15 Gasoline: Oxygen Sensors
15 Diesel: Engine Control Module (ECM), MAF/IAT Sensor
36 15 Inflatable Restraint Sensing and Diagnostic Module (SDM), Memory Seat Module (Passenger), Inside Reaview Mirror
37 10 Front Parking Lamps, Front Side Marker Lamps
38 10 Rear Window Defogger Relay, Instrument Panel Cluster (IPC), Rear Object Sensor Control Module, Selectable Ride Switch
39 10 Body Control Module (BCM)
40 10 Left Headlamp (High Beam)
41 20 Left Headlamp (Xenon)
42 10 Daytime Running Light Relay
43 10 Instrument Panel Cluster/Driver Information Center
44 10 HVAC Control Module
45 15 Cigarette Lighter, Data Link Connector
46 10 Right Headlamp (High Beam)
47 10 Air Conditioning Compressor Relay
48 -  -
49 -  -
50 15 Audio System, Digital Radio Receiver, Rear Seat Audio
51 15 Insturment Panel Cluster (IPC), Rear Fog Lamp Relay, Overhead Console, Roof Beacon Switch, Rear Heated Seats, HomeLink (Garage Door Opener)
52 10 Left Headlamp (Low Beam)
53 10 Brake Transmission Shift Interlock System
54 10 Starting System, Powertrain Control Module (Gasoline), Engine Control Module (Diesel), Transmission Control Module (TCM)
55 10 Right Headlamp (Low Beam)
56 15 Front Fog Lamps Relay
57 15 Windshield Washer Pump
58 15 Vehicle Communication Interface Module (VCIM), Rear Seat Entertainment (RSE) Assembly, Remote Playback Device-CD Player
59 30 Radio Amplifier
60 20 Right Headlamp (Xenon)
61 15 Horn
62 15 Electronic Adjustable Pedals (EAP) Relay
63 30 Transfer Case Encoder Motor, Transfer Case Shift Control Module
64 15 Supplemental Brake Assist Pump Motor, Fuel Pump Relay (Secondary)
65 125 Gasoline: Cust Feed
175 Diesel (2003-2004): Glow Plugs
125 Diesel (2006): Glow Plugs
175 Hybrid
66 10 Generator Battery Control Module
Relay
R1 Parking Lamps, Side Marker Lamps
R2 Starter
R3 Gasoline: Ignition
Diesel: Engine Control Module (ECM)
R4 Fuel Pump
R5 Headlamp High Beam
R6 Daytime Running Light
R7 Headlamp (Low Beam)
R8 Air Conditioning Compressor
R9 Front Fog Lamps
R10 Horn
R11 Windshield and Rear Window Washer Pump

Underhood Fuse Box №2 (Hybrid)

Underhood Fuse Box №2 (Hybrid)

A Circuit Breaker
1 30 Electronic Power Take-Off (EPTO) Switch, "AUX HTR PMP" and "TRANS PMP" Relays, Heated Oxygen Sensors
2 15 Heated Oxygen Sensors
3 10 "AUX HTR" Pump Relay
4 15 Energy Storage Control Module (ESCM)
5 -  -
6 10 Starter Generator Control Module, Hybrid Control Module (HCM)
7 15 Heated Oxygen Sensors
8 15 Transmission Pump Relay
9 10 Hybrid Control Module (HCM)
10 10 Electro Hydraulic Power Steering (EHPS) Module
11 15 Starter/Generator Control Module Coolant Pump
12 10 Electronic Power Take-Off (EPTO) Switch, "AUX HTR Pump" Relay, "TRANS PMP" Relay, and Park/Neutral Position Switch
13 -  -
14 -  -
15 -  -
Relay
R1  -
R2 "SCGM COOL PUMP/FAN" - REDBOX Coolant Pump and Fan
R3 Auxiliary Heater Pump
R4 Transmission Pump
R5 "PWR MAINT" - Electronic Power Take-Off (EPTO) Switch, "AUX HTR Pump" Relay, "TRANS PMP" Relay, Park/Neutral Position Switch, Heated Oxygen Sensors

Additional Relay Box (10 Series)

Additional Relay Box

A Circuit Breaker
1 40 Cooling Fan Relay №1
2 40 Cooling Fan Relay №2
3 10 Cooling Fan Relay №3
Relay
R1 Cooling Fan (Left)
R2 Cooling Fan (Left/Right - High Speed)
R3 Cooling Fan (Left/Right - Low Speed)

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Source: https://fusecheck.com/chevrolet/chevrolet-silverado-gmc-sierra-2003-2006-fuse-diagram

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