Hummer H2. Manual - part 1418

SCHEMATIC AND ROUTING DIAGRAMS 

EMISSION HOSE ROUTING DIAGRAM 

Fig. 1: Vacuum Hose Routing 
Courtesy of GENERAL MOTORS CORP. 

Callouts For Fig. 1 

P2125

C

C

P2135

A

A

P2610

B

B

P2761

B

B

P2771

B

B

U0107

A

A

 

2004 Hummer H2 

2004 ENGINE PERFORMANCE Engine Controls (Introduction) - 4.8L, 5.3L, and 6.0L - Hummer H2

  

EVAPORATIVE EMISSIONS (EVAP) HOSE ROUTING DIAGRAM 

Fig. 2: EVAP System Overview 
Courtesy of GENERAL MOTORS CORP. 

Callouts For Fig. 2 

Callout

Component Name

1

Manifold Absolute Pressure (MAP) Sensor

2

EVAP Canister Purge Hose

3

EVAP Service Port

4

Positive Crankcase Ventilation (PCV) Valve

5

Throttle Body

6

EVAP Canister Purge Valve

7

AIR Module, if equipped

Callout

Component Name

1

EVAP Canister Purge Solenoid Valve

2

EVAP Canister

3

Fuel Fill Neck/Fill Cap

4

Rollover Valve/Fuel Tank Pressure (FTP) Sensor

5

Fuel Tank

 

2004 Hummer H2 

2004 ENGINE PERFORMANCE Engine Controls (Introduction) - 4.8L, 5.3L, and 6.0L - Hummer H2

  

FUEL HOSE/PIPES ROUTING DIAGRAM (SINGLE FUEL TANK) 

Fig. 3: Fuel Hose/Pipes (Single Fuel Tank) 
Courtesy of GENERAL MOTORS CORP. 

Callouts For Fig. 3 

ENGINE CONTROLS SCHEMATIC ICONS 

Engine Controls Schematic Icons 

6

EVAP Canister Vent Solenoid Valve

7

Vent Hose/Pipe

8

EVAP Vapor Pipe

9

EVAP Purge Pipe

10

EVAP Service Port

Callout

Component Name

1

Fuel Pressure Service Connection

2

Fuel Injector Rail

3

Fuel Rail Feed Pipe

4

Fuel Feed Hose

5

Fuel Injector

Icon

Icon Definition

NOTE:

The OBD II symbol is used on the circuit 
diagrams in order to alert the technician that 

 

2004 Hummer H2 

2004 ENGINE PERFORMANCE Engine Controls (Introduction) - 4.8L, 5.3L, and 6.0L - Hummer H2

  

ENGINE CONTROLS SCHEMATICS 

the circuit is essential for proper OBD II 
emission control circuit operation. Any circuit 
which fails and causes the malfunction 
indicator lamp (MIL) to turn ON, or causes 
emissions-related component damage, is 
identified as an OBD II circuit.

 

2004 Hummer H2 

2004 ENGINE PERFORMANCE Engine Controls (Introduction) - 4.8L, 5.3L, and 6.0L - Hummer H2