Hummer H2. Manual - part 1782

Fig. 316: Valve Rocker Arm Pivot Support 
Courtesy of GENERAL MOTORS CORP. 

3. Remove the valve rocker arm pivot support. 

 

2004 Hummer H2 

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

  

Fig. 317: View Of Pushrods 
Courtesy of GENERAL MOTORS CORP. 

4. Remove the pushrods.  

CYLINDER HEAD REMOVAL - LEFT 

 

2004 Hummer H2 

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

  

Fig. 318: Cylinder Head & Bolts (Left) 
Courtesy of GENERAL MOTORS CORP. 

1. Remove the spark plugs from the cylinder head. 

2. Remove the cylinder head bolts. 

IMPORTANT: The cylinder head bolts can NOT be used again. Install NEW cylinder head 

bolts during assembly.

NOTE:

After removal, place the cylinder head on two wood blocks to prevent 
damage to the sealing surfaces.

 

2004 Hummer H2 

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

  

3. Remove the cylinder head. 

Fig. 319: Cylinder Head Gasket (Left) 
Courtesy of GENERAL MOTORS CORP. 

4. Remove the gasket.  

5. Discard the gasket.  

6. Discard the cylinder head bolts.  

CYLINDER HEAD REMOVAL - RIGHT 

 

2004 Hummer H2 

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