Hummer H2. Manual - part 1054

Doors

in Doors

Door Lock Switch - 

Passenger

On the right door trim panel 
armrest

Power Door Systems 
Component Views in 

Doors

Power Door Systems 

Connector End Views 

in Doors

Door Lock Switch - Rear

At the right rear of cargo 
area near the D-pillar

Power Door Systems 
Component Views in 

Doors

Power Door Systems 

Connector End Views 

in Doors

Door Window Motor - 

Driver

In the left front driver door

Power Door Systems 
Component Views in 

Doors

Power Door Systems 

Connector End Views 

in Doors

Door Window Motor - 

Front Passenger

In the right front passenger 
door

Power Door Systems 
Component Views in 

Doors

Power Door Systems 

Connector End Views 

in Doors

Driver Door Module 

(DDM)

In the driver door panel, 
part of the switch assembly

Power Door Systems 
Component Views in 

Doors

Power Door Systems 

Connector End Views 

in Doors

Electronic Brake Control 

Module (EBCM)

On the left side of the inner 
frame rail, under drivers 
seat floor board

ABS Component 

Views in Anti-lock 

Brake System

ABS Connector End 

Views in Anti-lock 

Brake System

Electronically Controlled 

Air Suspension Relay

At the left side of the 
engine compartment near 
the lower left wheel well 
attached to the chassis 
harness

Suspension Controls 

Component Views in 

Air Suspension

Suspension Controls 

Connector End Views 

in Air Suspension

Engine Coolant 

Temperature (ECT) 

Sensor

In the left cylinder head, in 
front of the #1 cylinder 
exhaust port

Engine Controls 

Component Views in 

Engine Controls - 6.0L

Engine Controls 

Connector End Views 

in Engine Controls - 

6.0L

Exhaust Gas 

Recirculation (EGR) 

Valve

On the top right front of the 
engine assembly

Engine Controls 

Component Views in 

Engine Controls - 6.0L

Engine Controls 

Connector End Views 

in Engine Controls - 

6.0L

Encoder Motor - Transfer 

Case

Attached to the transfer 
case

Transfer Case Control 

Component Views in 

Transfer Case - BW 

4484

Transfer Case Control 

Connector End Views 

in Transfer Case - BW 

4484

Engine Oil Level Switch

Lower right side of the oil 
pan

Engine Controls 

Component Views in 

Engine Controls - 6.0L

Engine Controls 

Connector End Views 

in Engine Controls - 

6.0L

Engine Oil Pressure 

(EOP) Sensor

At the rear of the engine on 
the left side of the center

Instrument Panel, 

Gauges, and Console 

Component Views in 

Instrument Panel, 

Gauges and Console

Instrument Panel, 

Gauges, and Console 

Connector End Views 

in Instrument Panel, 

Gauges and Console

 

2004 Hummer H2 

2004 ACCESSORIES & EQUIPMENT Wiring Systems (Component List) - Hummer H2

  

Evaporative Emission 

(EVAP) Canister Purge 

Solenoid

On the top right front of the 
engine

Engine Controls 

Component Views in 

Engine Controls - 6.0L

Engine Controls 

Connector End Views 

in Engine Controls - 

6.0L

Evaporative Emission 

(EVAP) Canister Vent 

Solenoid

At the front right side of the 
fuel tank

Engine Controls 

Component Views in 

Engine Controls - 6.0L

Engine Controls 

Connector End Views 

in Engine Controls - 

6.0L

Flasher Module

On the back side of the fuse 
block - I/P

Electrical Center 

Identification Views

-

Front Passenger Door 

Module (FPDM)

In the front passenger door 
trim panel, part of the door 
switch assembly

Power Door Systems 
Component Views in 

Doors

Power Door Systems 

Connector End Views 

in Doors

Fuel Injector 1

On the left side of the 
intake manifold near the 
front of the engine at the #1 
cylinder port

Engine Controls 

Component Views in 

Engine Controls - 6.0L

Engine Controls 

Connector End Views 

in Engine Controls - 

6.0L

Fuel Injector 2

On the right side of the 
intake manifold near the 
front of the engine at the #2 
cylinder port

Engine Controls 

Component Views in 

Engine Controls - 6.0L

Engine Controls 

Connector End Views 

in Engine Controls - 

6.0L

Fuel Injector 3

On the left side of the 
intake manifold near the 
middle of the engine at the 
#3 cylinder port

Engine Controls 

Component Views in 

Engine Controls - 6.0L

Engine Controls 

Connector End Views 

in Engine Controls - 

6.0L

Fuel Injector 4

On the right side of the 
intake manifold near the 
middle of the engine at the 
#4 cylinder port

Engine Controls 

Component Views in 

Engine Controls - 6.0L

Engine Controls 

Connector End Views 

in Engine Controls - 

6.0L

Fuel Injector 5

On the left side of the 
intake manifold near the 
middle of the engine at the 
#5 cylinder port

Engine Controls 

Component Views in 

Engine Controls - 6.0L

Engine Controls 

Connector End Views 

in Engine Controls - 

6.0L

Fuel Injector 6

On the right side of the 
intake manifold near the 
middle of the engine at the 
#6 cylinder port

Engine Controls 

Component Views in 

Engine Controls - 6.0L

Engine Controls 

Connector End Views 

in Engine Controls - 

6.0L

Fuel Injector 7

On the left side of the 
intake manifold near the 
rear of the engine at the #7 
cylinder port

Engine Controls 

Component Views in 

Engine Controls - 6.0L

Engine Controls 

Connector End Views 

in Engine Controls - 

6.0L

Fuel Injector 8

On the right side of the 
intake manifold near the 
rear of the engine at the #8 
cylinder port

Engine Controls 

Component Views in 

Engine Controls - 6.0L

Engine Controls 

Connector End Views 

in Engine Controls - 

6.0L

 

2004 Hummer H2 

2004 ACCESSORIES & EQUIPMENT Wiring Systems (Component List) - Hummer H2

  

Fuel Pump and Sender 

Assembly

In the fuel tank

Engine Controls 

Component Views in 

Engine Controls - 6.0L

Engine Controls 

Connector End Views 

in Engine Controls - 

6.0L

Fuel Tank Pressure (FTP) 

Sensor

Part of the fuel pump and 
sender assembly in the fuel 
tank

Engine Controls 

Component Views in 

Engine Controls - 6.0L

Engine Controls 

Connector End Views 

in Engine Controls - 

6.0L

Fuse Block - I/P

On the lower left side of the 
I/P behind the access panel

Electrical Center 

Identification Views

Electrical Center 

Identification Views

Fuse Block - Underhood

At the left side of the 
engine compartment near 
the battery

Electrical Center 

Identification Views

Electrical Center 

Identification Views

Garage Door Opener

Mounted in the overhead 
console

Garage Door Opener 

Component Views in 

Garage Door Opener

Garage Door Opener 

Connector End Views 

in Garage Door Opener

Generator

Top left front of the engine

Engine Electrical 

Component Views in 

Engine Electrical

Engine Electrical 

Connector End Views 

in Engine Electrical

Global Positioning 

Satellite (GPS) Antenna

Attached to the left front 
roof of vehicle

Cellular 

Communication 

Component Views in 

Cellular 

Communication

Cellular 

Communication 

Connector End Views 

in Cellular 

Communication

Headlamp - Left

On the left front of the 
vehicle

Lighting Systems 

Component Views in 

Lighting Systems

Lighting Systems 

Connector End Views 

in Lighting Systems

Headlamp - Right

On the right front of the 
vehicle

Lighting Systems 

Component Views in 

Lighting Systems

Lighting Systems 

Connector End Views 

in Lighting Systems

Headlamp and Panel 

Dimmer Switch

On the left side of the I/P

Lighting Systems 

Component Views in 

Lighting Systems

Lighting Systems 

Connector End Views 

in Lighting Systems

Heated Oxygen Sensor 

(HO2S) Bank 1 Sensor 1

In the left exhaust pipe after 
the catalytic converter

Engine Controls 

Component Views in 

Engine Controls - 6.0L

Engine Controls 

Connector End Views 

in Engine Controls - 

6.0L

Heated Oxygen Sensor 

(HO2S) Bank 1 Sensor 2

In the left exhaust pipe after 
the catalytic converter

Engine Controls 

Component Views in 

Engine Controls - 6.0L

Engine Controls 

Connector End Views 

in Engine Controls - 

6.0L

Heated Oxygen Sensor 

(HO2S) Bank 2 Sensor 1

In the right exhaust pipe 
before the catalytic 
converter

Engine Controls 

Component Views in 

Engine Controls - 6.0L

Engine Controls 

Connector End Views 

in Engine Controls - 

6.0L

 

2004 Hummer H2 

2004 ACCESSORIES & EQUIPMENT Wiring Systems (Component List) - Hummer H2

  

Heated Oxygen Sensor 

(HO2S) Bank 2 Sensor 2

In the right exhaust pipe 
after the catalytic converter

Engine Controls 

Component Views in 

Engine Controls - 6.0L

Engine Controls 

Connector End Views 

in Engine Controls - 

6.0L

Heated Seat Control 

Module - LR

Under the left rear seat

Power Seat Systems 

Component Views in 

Seats

Power Seat Systems 

Connector End Views 

in Seats

Heated Seat Control 

Module - RR

Under the right rear seat

Power Seat Systems 

Component Views in 

Seats

Power Seat Systems 

Connector End Views 

in Seats

Heated Seat Element - 

Driver Back

In the driver back cushion

Power Seat Systems 

Component Views in 

Seats

-

Heated Seat Element - 

Driver Cushion

In the driver seat cushion

Power Seat Systems 

Component Views in 

Seats

-

Heated Seat Element - 

Passenger Back

In the passenger back 
cushion

Power Seat Systems 

Component Views in 

Seats

-

Heated Seat Element - 

LR

In the left rear seat cushion

Power Seat Systems 

Component Views in 

Seats

-

Heated Seat Element - 

RR

In the right rear seat 
cushion

Power Seat Systems 

Component Views in 

Seats

-

Heated Seat Switch - 

Front Passenger

On the right front door trim 
panel

Power Seat Systems 

Component Views in 

Seats

Power Seat Systems 

Connector End Views 

in Seats

Heated Seat Switch - LR

On the rear of the center 
floor console

Power Seat Systems 

Component Views in 

Seats

Power Seat Systems 

Connector End Views 

in Seats

Heated Seat Switch - RR

On the rear of the center 
floor console

Power Seat Systems 

Component Views in 

Seats

Power Seat Systems 

Connector End Views 

in Seats

Horn Left High Note

On the left lower corner of 
the radiator core support

Horns Component 

Views in Horns

Horns Connector End 

Views in Horns

Horn - Right Low Note

On the right lower corner 
on the radiator core support

Horns Component 

Views in Horns

Horns Connector End 

Views in Horns

Horn Switch

Inside the steering wheel 
assembly

Steering Wheel and 

Column Component 

Views in Steering 

Wheel and Column

-

HVAC Control Module In the center of the I/P

HVAC Component 

Views in HVAC 

Systems - Automatic

HVAC Connector End 

Views in HVAC 

Systems - Automatic

 

2004 Hummer H2 

2004 ACCESSORIES & EQUIPMENT Wiring Systems (Component List) - Hummer H2