Hummer H2. Manual - part 2668

Fig. 28: Transfer Case Assembly 
Courtesy of GENERAL MOTORS CORP. 

1. Install the transfer case on a suitable transmission jack. 

2. Install a new transfer case gasket.  

3. Rotate the transfer case so that the transfer case is parallel to the torsion bar mounting bracket.  

4. Raise the transfer case into position.  

5. Rotate the transfer case so that the transfer case is aligned with the adapter.  

6. Install the transfer case on the adapter. 

7. Install the mounting nuts for the transfer case. 

IMPORTANT: When installing a new transfer case gasket, ensure that the locator tab is 

facing up for proper installation. Install the gasket without the use of any 
type of sealant or lubricant.

NOTE:

Refer to Fastener Notice in Cautions and Notices.

 

2004 Hummer H2 

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

  

Tighten: Tighten the mounting nuts to 50 N.m (37 lb ft).

8. Connect the vent hoses to the transfer case and transmission.  

9. Connect the vehicle speed sensor and encoder motor electrical connectors.  

10. Install the fuel lines into the retainer at the top of the transfer case. 

Fig. 29: Identifying Crossmember & Bolts 
Courtesy of GENERAL MOTORS CORP. 

11. Install the transmission support member. Refer to Transmission Support Replacement .  

12. Remove the transmission jack.  

13. Install the front propeller shaft. Refer to Propeller Shaft Replacement - Front in Propeller Shaft.  

14. Install the rear propeller shaft. Refer to Propeller Shaft Replacement - Rear in Propeller Shaft.  

15. Fill the transfer case with the proper transfer case fluid. Refer to Transfer Case Fluid Replacement .  

16. Lower the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.  

17. Fill the transmission fluid with the proper fluid. Refer to Automatic Transmission Fluid/Filter 

Replacement in Automatic Transmission - 4L60-E/4L65-E. 

 

2004 Hummer H2 

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

  

TRANSFER CASE INPUT SHAFT SEAL REPLACEMENT

Tools Required 

J 42738 Seal Installer. See Special Tools and Equipment . 

J 36825 Output Shaft Oil Seal Remover. See Special Tools and Equipment . 

Removal Procedure 

1. Raise the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.  

2. Remove the transfer case from the adapter. Refer to Transfer Case Assembly Replacement . 

 

2004 Hummer H2 

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

  

Fig. 30: Using J 36825 To Remove Input Shaft Seal From Transfer Case 
Courtesy of GENERAL MOTORS CORP. 

3. Using the J 36825 remove the input shaft seal from the transfer case by threading the self tapping screw 

(2) into the seal. See Special Tools and Equipment . 

 

2004 Hummer H2 

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