Hummer H2. Manual - part 2402

Fig. 10: Filling Supply Tank With Dexron(R)III/Mercon(R) 
Courtesy of GENERAL MOTORS CORP. 

5. Fill the supply tank with Dexron(R)III/Mercon(R), or equivalent, through the fill port.  

NOTE:

Do not overfill the supply vessel. Damage to the unit may result. To verify 
the fluid level, view the LCD screen display while filling the unit, to ensure 
the fluid level does not exceed 30 L (32 qt).

 

2004 Hummer H2 

2004 TRANSMISSION Automatic Transaxle - 4L60-E/4L65-E (Troubleshooting)

  

6. Install and tighten the fill cap. 

Fig. 11: Connecting A Shop Air Supply Hose To The Quick-Disconnect 
Courtesy of GENERAL MOTORS CORP. 

7. Connect a shop air supply hose to the quick-disconnect on the rear panel marked SUPPLY AIR.  

Determine Minimum Flow Rate 

 

2004 Hummer H2 

2004 TRANSMISSION Automatic Transaxle - 4L60-E/4L65-E (Troubleshooting)

  

Fig. 12: Identifying Temperature Of Automatic Transmission Fluid 
Courtesy of GENERAL MOTORS CORP. 

1. From the machine display, identify the temperature of the automatic transmission fluid that is stored in 

the supply vessel of J 45096 . 

 

2004 Hummer H2 

2004 TRANSMISSION Automatic Transaxle - 4L60-E/4L65-E (Troubleshooting)

  

Fig. 13: Determining Whether Transmission Oil Cooler Is Steel Or Aluminum 
Courtesy of GENERAL MOTORS CORP. 

2. Determine whether the transmission oil cooler is steel or aluminum by using a magnet (1) at the cooler 

flange (2) at the radiator.  

3. Refer to the table below. Using the temperature from step 1, locate on either the Steel MINIMUM Flow 

Rate table or the Aluminum MINIMUM Flow Rate table the minimum flow rate in gallons per minutes 
(GPM). Record the minimum flow rate in GPMs and the supply fluid temperature for further reference. 

Example:  

z

Fluid temperature: 24°C (75°F)  

z

Cooler type: Steel 

The MINIMUM flow rate for this example would be 0.8 GPM.

 

2004 Hummer H2 

2004 TRANSMISSION Automatic Transaxle - 4L60-E/4L65-E (Troubleshooting)