Hummer H2. Manual - part 2263

Fig. 90: Transmission Heat Shield Bolts & Heat Shield 
Courtesy of GENERAL MOTORS CORP. 

8. Install the heat shield.  

9. Install the two bolts securing the transmission heat shield to the transmission. 

Tighten: Tighten the bolts to 17 N.m (13 lb ft). 

10. Install the right hand catalytic converter. Refer to Catalytic Converter Replacement (Right Hand) in 

Engine Exhaust.  

11. Lower the vehicle.  

12. Fill the transmission to the proper level with DEXRON(R) III transmission fluid. Refer to Transmission 

Fluid Checking Procedure .  

PRESSURE REGULATOR REPLACEMENT 

 

2004 Hummer H2 

2004 TRANSMISSION Automatic Transmission - 4L60-E/4L65-E (Introduction) - Hummer H2

  

Removal Procedure 

Fig. 91: Locating Reverse Boost Valve 
Courtesy of GENERAL MOTORS CORP. 

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

2. Remove the transmission oil pan and filter. Refer to Automatic Transmission Fluid/Filter 

Replacement .  

3. Compress the reverse boost valve sleeve into the bore of the oil pump to release tension on the reverse 

boost valve retaining ring.  

4. Remove the reverse boost valve retaining ring, then slowly release tension on the reverse boost valve 

sleeve. 

 

2004 Hummer H2 

2004 TRANSMISSION Automatic Transmission - 4L60-E/4L65-E (Introduction) - Hummer H2

  

Fig. 92: Identifying Pressure Regulator Valve 
Courtesy of GENERAL MOTORS CORP. 

5. Remove the reverse boost valve sleeve (5) and the reverse boost valve (4).  

6. Remove the pressure regulator isolator spring (3) and the pressure regulator valve spring (2).  

7. Remove the pressure regulator valve (1).  

Installation Procedure 

 

2004 Hummer H2 

2004 TRANSMISSION Automatic Transmission - 4L60-E/4L65-E (Introduction) - Hummer H2

  

Fig. 93: Identifying Pressure Regulator Valve 
Courtesy of GENERAL MOTORS CORP. 

1. Install the pressure regulator valve (1).  

2. Install the pressure regulator isolator spring (3) and the pressure regulator valve spring (2).  

3. Install the reverse boost valve (4) in the reverse boost valve sleeve (5).  

4. Install the reverse boost valve (4) and sleeve (5) in the oil pump cover. 

 

2004 Hummer H2 

2004 TRANSMISSION Automatic Transmission - 4L60-E/4L65-E (Introduction) - Hummer H2