Hummer H2. Manual - part 1033

C103 (14 cavities)

harness, attached to the 
front side of the fuse block -
underhood

Harness Routing 

Views

Inline Harness 

Connector End Views

C104 (12 cavities)

I/P harness to chassis 
harness, at the left side of 
the engine compartment 
near the fuse block - 
underhood

Harness Routing 

Views

Inline Harness 

Connector End Views

C105 (1 cavity)

I/P harness to chassis 
harness, at the left side of 
the engine compartment 
near the wheel well

Harness Routing 

Views

Inline Harness 

Connector End Views

C106 (12 cavities)

Chassis harness to engine 
harness, under the fuse 
block - underhood

Harness Routing 

Views

Inline Harness 

Connector End Views

C115 (2 cavities)

Engine harness to knock 
sensor harness, at the top 
left rear of the engine

Harness Routing 

Views

Inline Harness 

Connector End Views

C148 (8 cavities)

Engine harness to the odd 
ignition coil harness, on the 
top left side of the engine

Harness Routing 

Views

Inline Harness 

Connector End Views

C158 (8 cavities)

Engine harness to the even 
ignition coil harness, at the 
top right rear of the engine

Harness Routing 

Views

Inline Harness 

Connector End Views

C175 (20 cavities)

Engine harness to the 
automatic transmission 
harness, at the right side of 
the automatic transmission

Harness Routing 

Views

Inline Harness 

Connector End Views

C200 (16 cavities)

I/P harness to body harness, 
on the left side of the I/P 
under the left kick panel

Harness Routing 

Views

Inline Harness 

Connector End Views

C201 (4 cavities)

I/P harness to body harness, 
on the left side of the I/P 
behind the left kick panel

Harness Routing 

Views

Inline Harness 

Connector End Views

C202 (52 cavities)

I/P harness to steering 
column harness, below the 
steering column attached to 
the transfer case shift 
control bracket, in back of 
the left I/P knee bolster

Harness Routing 

Views

Inline Harness 

Connector End Views

C203 (2 cavities)

I/P harness to steering 
column harness, below the 
steering column, in back of 
the left I/P knee bolster

Harness Routing 

Views

Inline Harness 

Connector End Views

Headliner harness to I/P 

 

2004 Hummer H2 

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

  

C210 (12 cavities)

harness, on the bottom left 
side of the I/P above the 
relay block - I/P

Harness Routing 

Views

Inline Harness 

Connector End Views

C211 (1 Cavity)

Relay Body harness to 
crossrail roof lamp harness, 
at the left side of I/P, 35 cm 
(11 inches) from relay 
block - I/P C7 connector

-

Inline Harness 

Connector End Views

C212 (2 Cavities)

Relay body harness to 
crossrail roof lamp harness, 
at the left side of I/P, 35 cm 
(11 inches) from relay 
block - I/P C7 connector

-

Inline Harness 

Connector End Views

C277 (8 Cavities)

Steering column harness to 
steering wheel harness, in 
the top of the steering 
column below the steering 
wheel assembly

Harness Routing 

Views

Inline Harness 

Connector End Views

C298 (22 cavities)

Body harness to I/P 
harness, on the right side of 
the front passenger 
compartment behind the 
right kick panel

Harness Routing 

Views

Inline Harness 

Connector End Views

C310 (17 cavities)

Body harness to left rear 
door harness, at the left side 
B-pillar

Harness Routing 

Views

Inline Harness 

Connector End Views

C311 (3 Cavities)

Body harness to crossrail 
roof lamp harness, at base 
of left roof rail above driver 
seat

Harness Routing 

Views

Inline Harness 

Connector End Views

C320 (6 cavities)

Body harness to left rear 
seat harness, under the left 
rear seat

Harness Routing 

Views

Inline Harness 

Connector End Views

C325 (16 cavities)

Body harness to driver seat 
harness, under the driver 
seat

Harness Routing 

Views

Inline Harness 

Connector End Views

C326 (13 cavities)

Driver seat harness, under 
the driver seat

Power Seat Systems 

Component Views in 

Seats

Inline Harness 

Connector End Views

C327 (24 cavities)

Driver seat harness, under 
the driver seat

Power Seat Systems 

Component Views in 

Seats

Inline Harness 

Connector End Views

C328 (10 cavities)

Driver seat harness, under 
the driver seat

Power Seat Systems 

Component Views in 

Seats

Inline Harness 

Connector End Views

 

2004 Hummer H2 

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

  

C329 (6 cavities)

Driver seat harness, under 
the driver seat

Power Seat Systems 

Component Views in 

Seats

Inline Harness 

Connector End Views

C330 (6 cavities)

Driver seat harness, under 
the driver seat

Power Seat Systems 

Component Views in 

Seats

Inline Harness 

Connector End Views

C333 (8 cavities)

Driver seat harness, under 
the driver seat

Power Seat Systems 

Component Views in 

Seats

Inline Harness 

Connector End Views

C350 (22 cavities)

I/P harness to console 
harness, under the front 
floor upper console

Harness Routing 

Views

Inline Harness 

Connector End Views

C355 (8 cavities)

Body harness to console 
harness, in front of the 
audio amplifier on the floor 
console to the right of the 
floor shifter

Harness Routing 

Views

Inline Harness 

Connector End Views

C375 (16 cavities)

Body harness to passenger 
seat harness, under the 
passenger seat

Harness Routing 

Views

Inline Harness 

Connector End Views

C376 (6 cavities)

Passenger seat harness, 
under the passenger seat

Power Seat Systems 

Component Views in 

Seats

Inline Harness 

Connector End Views

C377 (6 cavities)

Passenger seat harness, 
under the passenger seat

Power Seat Systems 

Component Views in 

Seats

Inline Harness 

Connector End Views

C378 (4 cavities)

Passenger seat harness, 
under the passenger seat

Power Seat Systems 

Component Views in 

Seats

Inline Harness 

Connector End Views

C380 (6 cavities)

Body harness to right rear 
seat harness, under the right 
rear seat

Harness Routing 

Views

Inline Harness 

Connector End Views

C390 (17 cavities)

Body harness to right rear 
door harness, at the right 
side B-pillar

Harness Routing 

Views

Inline Harness 

Connector End Views

C420 (12 cavities)

Body harness to liftgate 
jumper harness, at the right 
rear liftgate hinge, near the 
right rear roof panel

Harness Routing 

Views

Inline Harness 

Connector End Views

C450 (2 cavities)

Chassis harness to air 
suspension harness, at the 
rear underside of the 
vehicle attached to the air 
suspension assembly

Harness Routing 

Views

Inline Harness 

Connector End Views

Chassis harness to air 

 

2004 Hummer H2 

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

  

C451 (16 cavities)

suspension harness, at the 
rear underside of the 
vehicle attached to the air 
suspension assembly

Harness Routing 

Views

Inline Harness 

Connector End Views

C900 (12 cavities)

Liftgate jumper harness to 
liftgate harness, inside the 
top center of the liftgate

Harness Routing 

Views

Inline Harness 

Connector End Views

G100

On the left front frame body 
mount

Power and Grounding 

Component Views

-

G102

At the left front side of the 
engine block

Power and Grounding 

Component Views

-

G103

At the top right rear of the 
engine

Power and Grounding 

Component Views

-

G104

At the top left rear of the 
engine

Power and Grounding 

Component Views

-

G106

At the right rear of the 
engine compartment on the 
forward dash panel

Power and Grounding 

Component Views

-

G200

On the left side of the I/P 
behind the left kick panel

Power and Grounding 

Component Views

-

G203

At the lower right side of 
the I/P behind the right kick 
panel

Power and Grounding 

Component Views

-

G300

On the left side body mount 
in front of the driver door

Power and Grounding 

Component Views

-

G302

At the left inner center B-
pillar

Power and Grounding 

Component Views

-

G304

Under the front passenger 
seat carpet

Power and Grounding 

Component Views

-

G306

At the right inner center B-
pillar

Power and Grounding 

Component Views

-

G308

At the right frame body 
mount near the right rear 
door

Power and Grounding 

Component Views

-

G310

At the left frame body 
mount under the left rear 
passenger door

Power and Grounding 

Component Views

-

G401

At the left rear frame body 
mount

Power and Grounding 

Component Views

-

G402 (ZM6)

Attached to the front of the 
air suspension mounting 
bracket

Power and Grounding 

Component Views

-

G405

At the right rear frame body 
mount

Power and Grounding 

Component Views

-

 

2004 Hummer H2 

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