Hummer H2. Manual - part 2688

Fig. 102: Inspecting Pads On High/Low Range Shift Fork For Wear 
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 - BW 4484 - Hummer H2

  

Fig. 103: Inspecting 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 - BW 4484 - Hummer H2

  

Fig. 104: Shift Detent Lever Assembly Components 
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 - BW 4484 - Hummer H2

  

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Excessive wear  

2. Inspect the shift detent lever shaft (4) for the following conditions: 

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Encoder motor drive end excessively worn  

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Straightness  

3. Inspect the sleeve (2) for excessive wear or for being grooved from the spring (3).  

4. Inspect the spring (3) for being weak or the tabs bent.  

5. Replace any of the above components if they are found to be faulty. Refer to Transfer Case Disassemble

and Transfer Case Assemble .  

TRANSFER CASE ASSEMBLE 

Tools Required 

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J 3289-20 Holding Fixture. See Special Tools and Equipment .  

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J 8092 Universal Driver Handle  

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J 22912-01 Split Plate Bearing Puller  

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J 36850 Transjel Lubricant. See Special Tools and Equipment .  

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J 42176 Universal Driver Handle - Non-Threaded. See Special Tools and Equipment .  

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J 42738 Seal Installer. See Special Tools and Equipment .  

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J 43484 Front Output Shaft Seal Installer. See Special Tools and Equipment .  

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J 45756 Rear Output Shaft Seal Installer. See Special Tools and Equipment .  

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J 45757 Mainshaft Support Bushing and Bearing Installer. See Special Tools and Equipment .  

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J 45759 Assembly Fixture. See Special Tools and Equipment . 

 

2004 Hummer H2 

2004 DRIVELINE/AXLE Transfer Case - BW 4484 - Hummer H2