Hummer H2. Manual - part 2625

Fig. 37: Identifying Oxygen Sensor Electrical Connector 
Courtesy of GENERAL MOTORS CORP.

 

2004 Hummer H2 

2003-04 AUTOMATIC TRANSMISSIONS Servicing - H2

  

Fig. 38: Identifying Transmission Heat Shield 
Courtesy of GENERAL MOTORS CORP.

 

2004 Hummer H2 

2003-04 AUTOMATIC TRANSMISSIONS Servicing - H2

  

Fig. 39: Removing & Installing Filler Tube 
Courtesy of GENERAL MOTORS CORP. 

Installation 

 

2004 Hummer H2 

2003-04 AUTOMATIC TRANSMISSIONS Servicing - H2

  

1. Install a NEW seal into transmission case. See Fig. 39 . Install the transmission oil level indicator tube 

into seal.  

2. Install the transmission level indicator tube nut. Tighten nut to specification. See TORQUE 

SPECIFICATIONS .  

3. Install transmission heat shield. Install the 2 bolts retaining the heat shield. Tighten the bolts to 

specification. See TORQUE SPECIFICATIONS .  

4. Install right catalytic converter and nuts. Tighten nuts to specification. See TORQUE 

SPECIFICATIONS .  

5. Install exhaust manifold pipe-to-catalytic converter nuts. Tighten nuts to specification. See TORQUE 

SPECIFICATIONS .  

6. Connect oxygen sensor electrical connectors (1, 2). See Fig. 37 . Connect the CPA retainers.  

7. Install the catalytic converter guard. Tighten bolts to specification. See TORQUE SPECIFICATIONS . 

Install frame-to-engine protection shield. Tighten bolts to specification. See TORQUE 
SPECIFICATIONS .  

8. Lower the vehicle. Install the transmission oil level indicator.  

9. Fill transmission to proper level with appropriate fluid. See LUBRICATION .  

MANUAL SHIFT SHAFT SEAL 

Removal 

1. Raise the vehicle. Remove the Park/Neutral Position (PNP) Switch. See PARK/NEUTRAL POSITION 

SWITCH .  

2. Be sure that the jackscrew for Selector Shaft Seal Remover is backed off and will not interfere with 

installation of the removal tool. Slide the seal remover tool over the selector shaft (2) with the threaded 
end of the tool towards the seal. See Fig. 40 .  

3. Rotate the removal tool so that the threads on the end of the tool engage the steel shell (1) of the seal. Use 

a wrench to be sure that the removal tool is firmly attached to the seal shell.  

4. Rotate the jackscrew in the clockwise direction to remove the seal from the bore. Discard the seal that 

was removed.  

NOTE:

Tools required: Selector Shaft Seal Remover (J-43911) and Selector Shaft Seal 
Installer (J-43909). 

 

2004 Hummer H2 

2003-04 AUTOMATIC TRANSMISSIONS Servicing - H2