Hummer H2. Manual - part 2723

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The lockup mode shift fork (1)  

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The high/low range shift fork (2)  

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The shift detent lever shaft assembly (3)  

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The shift fork spring (4)  

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The shift fork shaft (5)  

Fig. 66: Identifying Shift System Components 
Courtesy of GENERAL MOTORS CORP. 

2. Inspect the shift fork shaft (5) for straightness and excessive wear at the shift fork locations.  

3. Replace the shift fork shaft if it is not straight or if it is worn excessively. 

 

2004 Hummer H2 

2004 DRIVELINE/AXLE Transfer Case - Overhaul - BW 4482-NR4

  

Fig. 67: Identifying Shift Fork Pads 
Courtesy of GENERAL MOTORS CORP. 

1. Inspect the pads on the high/low range shift fork for wear.  

2. Replace the worn pads.  

3. Inspect the roller on the shift fork for wear.  

4. Inspect the bore for the shift fork shaft for excessive wear.  

5. Replace the shift fork if the above conditions are found. 

 

2004 Hummer H2 

2004 DRIVELINE/AXLE Transfer Case - Overhaul - BW 4482-NR4

  

Fig. 68: Lockup Mode Shift Fork 
Courtesy of GENERAL MOTORS CORP. 

1. Inspect the lockup mode shift fork for excessive wear at the lockup collar pads.  

2. Inspect the lockup mode shift fork for wear at the shift detent cam follower.  

3. Inspect the lockup mode shift fork for cracks.  

4. Replace the lockup mode shift fork if any of the above conditions are found.  

 

2004 Hummer H2 

2004 DRIVELINE/AXLE Transfer Case - Overhaul - BW 4482-NR4

  

Fig. 69: Expanded View Of Shift Detent Lever Assembly 
Courtesy of GENERAL MOTORS CORP. 

1. Inspect the shift detent lever (1) at the cam surfaces for the following conditions: 

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Roughness  

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Grooved  

IMPORTANT: Only disassemble the shift detent lever shaft assembly if replacing a 

faulty component. The tip on the end of the shift detent lever shaft is used 
for assembly. If the tip is broken off, the shaft can still be used, but may 
cause problems aligning with the rear case half during the assembly 
procedure.

 

2004 Hummer H2 

2004 DRIVELINE/AXLE Transfer Case - Overhaul - BW 4482-NR4