Hummer H2. Manual - part 1781

Fig. 312: Valve Rocker Arm Cover & Bolts (Right) 
Courtesy of GENERAL MOTORS CORP. 

3. Remove the valve rocker arm cover bolts.  

4. Remove the valve rocker arm cover. 

 

2004 Hummer H2 

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

  

Fig. 313: Valve Rocker Arm Cover Gasket 
Courtesy of GENERAL MOTORS CORP. 

5. Remove the gasket (504) from the right cover.  

6. Discard the gasket. 

The bolt grommets may be used again if they are not damaged.

 

2004 Hummer H2 

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

  

Fig. 314: View Of Oil Fill Tube 
Courtesy of GENERAL MOTORS CORP. 

7. Remove the oil fill cap from the oil fill tube.  

8. Remove the oil fill tube, if required.  

9. Discard the oil fill tube. 

 

2004 Hummer H2 

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

  

VALVE ROCKER ARM AND PUSH ROD REMOVAL

Fig. 315: Valve Rocker Arms 
Courtesy of GENERAL MOTORS CORP. 

1. Remove the valve rocker arm bolts.  

2. Remove the valve rocker arms. 

IMPORTANT: Place valve rocker arms, valve pushrods, and pivot support, in a rack so that 

they can be installed in the same location from which they were removed.

 

2004 Hummer H2 

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