Hummer H2. Manual - part 1058

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

  

G410

On the right rear inner side 
body panel

Power and Grounding 

Component Views

-

S100

In the forward lamp 
harness, approximately 28 
cm (11 in) from the 
junction of the left horn 
harness to the forward lamp 
harness along the left front 
of the radiator support

Harness Routing 

Views

-

S101

In the forward lamp 
harness, approximately 5 
cm (2 inches) from the 
ambient temperature sensor 
harness to the forward lamp 
harness at the right front of 
radiator support

Harness Routing 

Views

-

S102

In the engine harness, at the 
top rear of engine, 
approximately 4 cm (1.75 
in) from the knock sensor 
connector harness junction 
to the engine harness

Harness Routing 

Views

-

S103

In the engine harness, at the 
top left of the engine, 
approximately 10 cm (4 in) 
from the junction of the fuel 
injector 3 harness to the 
engine harness

Harness Routing 

Views

-

S104

In the engine harness, at the 
top left of the engine, 
approximately 30 cm (11.5 
in) from the junction of the 
fuel injector 3 harness to 
the engine harness

Harness Routing 

Views

-

S140

In the ignition coil harness

-

-

S141

In the ignition coil harness

-

-

S142

In the ignition coil harness

-

-

S160

In the ignition coil harness

-

-

S161

In the ignition coil harness

-

-

S162

In the ignition coil harness

-

-

S210

In the I/P harness, at the left 
side of the I/P, 
approximately 8.5 cm (3.5 
in) from the junction of the 
instrument cluster 

Harness Routing 

Views

-

 

2004 Hummer H2 

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