Hummer H2. Manual - part 1775

Fig. 289: Manifold, Heat Shield & Bolts (Right) 
Courtesy of GENERAL MOTORS CORP. 

4. Remove the heat shield (603) and bolts (604) from the manifold (600), if required.  

WATER PUMP REMOVAL 

 

2004 Hummer H2 

2004 ENGINE Engine Mechanical - 4.8L, 5.3L, and 6.0L - Hummer H2

  

Fig. 290: Water Pump, Bolts & Gaskets 
Courtesy of GENERAL MOTORS CORP. 

1. Remove the water pump bolts.  

2. Remove the water pump and gaskets.  

3. Discard the water pump gaskets.  

THROTTLE BODY REMOVAL 

 

2004 Hummer H2 

2004 ENGINE Engine Mechanical - 4.8L, 5.3L, and 6.0L - Hummer H2

  

Fig. 291: Throttle Body & Nuts 
Courtesy of GENERAL MOTORS CORP. 

1. Remove the electrical wire harness connectors from the throttle body.  

2. Remove the engine coolant air bleed hose and clamp.  

3. Remove the throttle body nuts.  

4. Remove the throttle body. 

IMPORTANT: The intake manifold, throttle body, fuel injection rail, and fuel injectors 

may be removed as an assembly. If not servicing the individual 
components, remove the manifold as a complete assembly.

 

2004 Hummer H2 

2004 ENGINE Engine Mechanical - 4.8L, 5.3L, and 6.0L - Hummer H2

  

Fig. 292: Throttle Body Gasket 
Courtesy of GENERAL MOTORS CORP. 

5. Remove the throttle body gasket (509).  

6. Discard the gasket.  

7. Remove the throttle body studs, if required.  

FUEL RAIL AND INJECTORS REMOVAL 

 

2004 Hummer H2 

2004 ENGINE Engine Mechanical - 4.8L, 5.3L, and 6.0L - Hummer H2