Hummer H2. Manual - part 1851

Fig. 570: Main Cap Bolt Hole Tightening Sequence 
Courtesy of GENERAL MOTORS CORP. 

4. Drill out the damaged hole. 

The outer bolt hole locations (11-20) have the shallower counterbores. Use sleeve J 42385-316 with the 
drill. 

Drill until the stop collar of the drill bit or the sleeve contacts the bushing. 

5. Using compressed air, clean out any chips. 

 

2004 Hummer H2 

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

  

Fig. 571: Tap Upper & Lower Marks, Fixture Plate Bushing 
Courtesy of GENERAL MOTORS CORP. 

6. Using a tap wrench, tap the threads of the drilled hole. 

In order to tap the new threads to the proper depth, rotate the tap into the hole until the mark on the tap 
aligns with the top of the bushing. 

For the deeper main cap holes (1-10), rotate the tap until the upper mark (4) on the tap aligns with the top 
of the bushing (3). 

 

2004 Hummer H2 

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

  

For the shallower main cap holes (11-20), rotate the tap until the lower mark (1) on the tap aligns with top 
of the bushing (3). 

7. Using compressed air, clean out any chips.  

8. Spray cleaner GM P/N 12346139 (Canadian P/N 10953463) or equivalent into the hole.  

9. Using compressed air, clean any cutting oil and chips out of the hole. 

Fig. 572: Lubricating Installer Tool Using Driver Oil 
Courtesy of GENERAL MOTORS CORP. 

IMPORTANT: Do not allow oil or other foreign material to contact the outside diameter 

(OD) of the insert.

 

2004 Hummer H2 

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

  

10. Lubricate the threads of the installer tool (2) with the driver oil (1). 

Fig. 573: Bushing Type Insert & Driver Tool 
Courtesy of GENERAL MOTORS CORP. 

11. Install the insert (2) onto the driver tool (1). 

 

2004 Hummer H2 

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