Hummer H2. Manual - part 2253

4. Install the instrument panel trim plate bezel. Refer to Trim Panel Replacement - Instrument Panel 

(I/P) Center in Instrument Panel, Gauges, and Console.  

AUTOMATIC TRANSMISSION FLUID/FILTER REPLACEMENT 

Removal Procedure 

CAUTION: When the transmission is at operating temperatures, take necessary 

precautions when removing the drain plug, to avoid being burned by 
draining fluid.

 

2004 Hummer H2 

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

  

Fig. 53: Draining Transmission 
Courtesy of GENERAL MOTORS CORP. 

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

2. Place a drain pan under the transmission oil pan.  

3. Remove the oil pan drain plug, if equipped.  

4. If necessary, remove the bolts and position aside the range selector cable bracket for clearance while 

lowering the pan. It is not necessary to remove the cable from the lever or bracket.  

5. Remove the oil pan bolts from the front and sides of the pan only.  

6. Loosen the rear oil pan bolts approximately 4 turns.  

7. Lightly tap the oil pan with a rubber mallet in order to loosen the pan to allow the fluid to drain. 

 

2004 Hummer H2 

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

  

Fig. 54: Oil Pan Bolts 
Courtesy of GENERAL MOTORS CORP. 

8. Remove the remaining oil pan bolts. 

 

2004 Hummer H2 

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

  

Fig. 55: Oil Pan & Gasket 
Courtesy of GENERAL MOTORS CORP. 

9. Remove the oil pan and the gasket. 

 

2004 Hummer H2 

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