Hummer H2. Manual - part 1845

Fig. 548: Removing Damaged Threads 
Courtesy of GENERAL MOTORS CORP. 

CAUTION: Refer to Safety Glasses Caution in Cautions and Notices.

IMPORTANT:

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The use of a cutting type fluid GM P/N 1052864 (Canadian P/N 
992881), WD 40(R), or equivalent is recommended when performing 
the drilling, counterboring, and tapping procedures.  

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Driver oil MUST be used on the installer driver tool.  

 

2004 Hummer H2 

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

  

1. Drill out the threads of the damaged hole (1). 

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M6 inserts require a minimum drill depth of 15 mm (0.59 in).  

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M8 inserts require a minimum drill depth of 20 mm (0.79 in).  

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M10 inserts require a minimum drill depth of 23.5 mm (0.93 in).  

2. Using compressed air, clean out any chips. 

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The tool kits are designed for use with either a suitable tap wrench 
or drill motor.  

 

2004 Hummer H2 

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

  

Fig. 549: View Of Counterbore Drill 
Courtesy of GENERAL MOTORS CORP. 

3. Counterbore the hole to the full depth permitted by the tool (1).  

4. Using compressed air, clean out any chips. 

 

2004 Hummer H2 

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

  

Fig. 550: Removing Damaged Threads 
Courtesy of GENERAL MOTORS CORP. 

5. Using a tap wrench (2), tap the threads of the drilled hole. 

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M6 inserts require a minimum tap depth of 15 mm (0.59 in).  

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M8 inserts require a minimum tap depth of 20 mm (0.79 in).  

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M10 inserts require a minimum tap depth of 23.5 mm (0.93 in).  

6. Using compressed air, clean out any chips.  

7. Spray cleaner GM P/N 12346139 (Canadian P/N 10953463), GM P/N 12377981 (Canadian P/N 

10953463) or equivalent into the hole.  

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

 

2004 Hummer H2 

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