Hummer H2. Manual - part 1776

Fig. 293: Fuel Rail Stop Bracket & Bolt 
Courtesy of GENERAL MOTORS CORP. 

1. Remove the fuel rail stop bracket and bolt, if required.  

2. Loosen the crossover tube-to-right fuel rail retaining bolt. 

CAUTION: Refer to Fuel Rail Stop Bracket Installation Caution in Cautions and 

Notices.

NOTE:

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Remove the fuel rail assembly carefully in order to prevent damage 
to the injector electrical connector terminals and the injector spray 
tips. Support the fuel rail after the fuel rail is removed in order to 
avoid damaging the fuel rail components.  

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Cap the fittings and plug the holes when servicing the fuel system in 
order to prevent dirt and other contaminants from entering open 
pipes and passages.  

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 intake manifold as a complete assembly.

 

2004 Hummer H2 

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

  

3. Remove the fuel rail bolts. 

Fig. 294: Removing Fuel Rail With Injectors 
Courtesy of GENERAL MOTORS CORP. 

IMPORTANT:

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Do not separate the fuel injectors from the fuel rail unless 

 

2004 Hummer H2 

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

  

4. Remove the fuel rail, with injectors, lifting evenly from both sides of the fuel rail until all the injectors 

have left their bores.  

INTAKE MANIFOLD REMOVAL 

component service is required.  

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Use cleanliness and care when handling the fuel system 
components.  

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Do not allow dirt or debris to enter the fuel injectors or fuel rail 
components. Cap ends as necessary.  

 

2004 Hummer H2 

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

  

Fig. 295: Identifying PCV Hose 
Courtesy of GENERAL MOTORS CORP. 

IMPORTANT:

z

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.  

z

DO NOT use the intake manifold-to-cylinder head gaskets again.  

 

2004 Hummer H2 

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