Hummer H2. Manual - part 2359

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Excessive end play.  

2. Install the J 35138 , the. See Special Tools and Equipment . J 26900-13 and the J 8001 or J 39195 to be 

used with the 300 mm torque converter. See Special Tools and Equipment . 

Specification:  

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The end play for a 245 mm torque converter should be 0-0.38 mm (0-0.015 in).  

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The end play for a 298 mm torque converter should be 0.1-0.48 mm (0.004-0.019 in).  

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The end play for a 258 mm and 300 mm torque converter should be 0.1-0.5 mm (0.004-0.020 in).  

3. Remove the tools.  

TORQUE CONVERTER INSTALLATION 

Tools Required 

J 21366 Converter Holding Strap 

IMPORTANT: The torque converter should not be replaced if the fluid has an odor, 

discoloration or no evidence of metal or clutch plate material. 
Flushing the torque converter is not recommended.

CAUTION: The torque converter weighs approximately 65 lbs. Personal injury 

may result if you lift the torque converter improperly.

 

2004 Hummer H2 

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

  

Fig. 462: Installing Torque Converter 
Courtesy of GENERAL MOTORS CORP. 

1. Install the torque converter.  

2. Install the J 21366 .  

HOLDING FIXTURE REMOVAL 

 

2004 Hummer H2 

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

  

Tools Required 

J 8763-B Holding Fixture and Base. See Special Tools and Equipment . 

Fig. 463: J 8763-02 & Transmission 
Courtesy of GENERAL MOTORS CORP. 

Remove the transmission from the J 8763-B . See Special Tools and Equipment . 

DESCRIPTION AND OPERATION 

PARK - ENGINE RUNNING 

With the gear selector lever in the PARK (P) position and the engine running, the line pressure from the oil 
pump assembly is directed to various components in the valve body and the oil pump. 

Pressure Regulator Valve 

The pressure regulator valve regulates the oil pump output (line pressure) in response to the signal fluid 
pressure, the spring force and the line pressure acting on the end of the valve. The line pressure is routed 

 

2004 Hummer H2 

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

  

through the valve and into both the converter feed and the decrease fluid circuits. Regulated line pressure is also 
directed to the manual valve, the converter clutch valve, the actuator feed limit valve, and the regulated apply 
valve. 

Pressure Relief Valve 

Controlled by spring force, this checkball limits the maximum value of the line pressure. When the line pressure 
reaches this limiting value, fluid is exhausted past the ball and returns to the sump. 

Line Pressure Tap 

The line pressure tap provides a location to measure the line pressure with a fluid pressure gauge. 

Actuator Feed Limit Valve 

Biased by spring force and orificed AFL fluid, it limits the maximum value of line pressure entering the AFL 
fluid circuit. Below this limiting value, the AFL fluid pressure equals the line pressure. The AFL fluid is routed 
to the pressure control solenoid valve, the 3-2 control solenoid valve, the TCC PWM solenoid valve, the 1-2 
and 2-3 shift solenoid valves, and the 2-3 shift valve train. 

Pressure Control (PC) Solenoid Valve 

Controlled by the powertrain control module (PCM), the PC solenoid valve regulates the filtered AFL fluid into 
the torque signal fluid pressure. The PCM controls this regulation by varying the current value to the PC 
solenoid valve in relation to the throttle position and other vehicle operating conditions. 

Torque Converter Clutch (TCC) 

Torque Converter Clutch PWM Solenoid and Regulator Apply and Isolator Valve 

AFL fluid is routed to the TCC PWM solenoid valve, in Park the PCM has the duty cycle turned OFF. This 
prevents AFL fluid from entering the converter clutch signal fluid circuit. Regulated line pressure is routed to 
the regulator apply valve, which is open with CC signal circuit empty, and blocks line pressure from entering 
the regulated apply circuit. Any fluid in the regulated apply circuit will exhaust at the regulated apply valve. 

TCC Solenoid Valve 

Under normal operating conditions, the PCM keeps the normally open TCC solenoid valve de-energized (OFF). 
Converter feed fluid exhausts through the open TCC solenoid valve, and spring force keeps the converter clutch 
apply valve in the release position. 

Converter Clutch Valve 

IMPORTANT: TCC converter feed valve assembly (#4), in the converter feed circuit, prevents 

converter drain down. The orifice is smaller than the exhaust through the TCC 
solenoid valve. Therefore, fluid pressure does not build up at the end of the 
converter clutch apply valve.

 

2004 Hummer H2 

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