Hummer H2. Manual - part 1780

Fig. 308: Ignition Coil & Bracket Assembly (Left) 
Courtesy of GENERAL MOTORS CORP. 

1. Remove the ignition coil bracket bolts from the rocker arm cover, if required.  

2. Remove the ignition coil and bracket assembly from the cover. 

IMPORTANT: Do not remove the ignition coils and bracket from the valve rocker arm 

cover unless required.

 

2004 Hummer H2 

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

  

Fig. 309: Valve Rocker Arm Cover (Left) 
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. 310: Valve Rocker Arm Cover Gasket 
Courtesy of GENERAL MOTORS CORP. 

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

6. Discard the gasket. 

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

VALVE ROCKER ARM COVER REMOVAL - RIGHT 

 

2004 Hummer H2 

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

  

Fig. 311: Ignition Coil & Bracket Assembly (Right) 
Courtesy of GENERAL MOTORS CORP. 

1. Remove the ignition coil bracket bolts from the rocker arm cover, if required.  

2. Remove the ignition coil and bracket assembly from the cover. 

IMPORTANT:

z

Do not remove the ignition coils from the valve rocker arm cover 
unless required.  

z

Do not remove the oil fill tube from the cover unless service is 
required.  

z

If the oil fill tube has been removed from the cover, install a NEW 
tube during assembly.  

 

2004 Hummer H2 

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