Hummer H2. Manual - part 1807

Fig. 410: Piston Rings & Piston 
Courtesy of GENERAL MOTORS CORP. 

2. Using piston ring pliers, remove the piston rings from the piston. 

 

2004 Hummer H2 

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

  

Fig. 411: Piston Pin Retaining Clip Ring Gap & Cutout Area Of Pin Bore 
Courtesy of GENERAL MOTORS CORP. 

3. Rotate the piston pin retaining clips until the ring end gap is positioned in the cutout area (1) of the pin 

bore. 

 

2004 Hummer H2 

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

  

Fig. 412: Piston Pin Retaining Clips 
Courtesy of GENERAL MOTORS CORP. 

4. Remove the clips starting in the cutout area of the pin bore. 

 

2004 Hummer H2 

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

  

Fig. 413: Identifying Piston & Components 
Courtesy of GENERAL MOTORS CORP. 

5. Remove the pin from the piston and connecting rod.  

6. The piston and pin are a matched set and are not to be serviced separately. 

Mark, sort, or organize the piston and the matching piston pin. 

PISTON, CONNECTING ROD, AND BEARINGS CLEANING AND INSPECTION 

Piston, Pin, and Piston Rings 

 

2004 Hummer H2 

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