Hummer H2. Manual - part 2357

Fig. 454: Inspecting 4th Apply Piston, 2-4 Servo Cover, 2nd Apply Piston, Servo Piston Inner 
Housing 
Courtesy of GENERAL MOTORS CORP. 

1. Inspect the 4th apply piston (25), the 2-4 servo cover (28), the 2nd apply piston (17), and the servo piston 

inner housing (20) for the following conditions: 

z

Cracks  

z

Scoring  

z

Burrs and nicks  

2. Install the following seals: 

z

The 4th apply piston outer oil seal ring (26) on the 4th apply piston (25).  

z

The 2-4 servo cover O-ring seal (27) on the 2-4 servo cover (28). 

 

2004 Hummer H2 

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

  

z

The 2nd apply piston outer (18) and inner (19) oil seal rings on the 2nd apply piston (17).  

z

The O-ring seal (21) on the servo piston inner housing (20).  

Fig. 455: Using J 22269-01 To Compress Second Apply Piston Assembly 
Courtesy of GENERAL MOTORS CORP. 

3. Install the servo cushion outer spring (16), the servo cushion inner spring (105) (model dependent) and 

the cushion spring retainer (15) in the 2nd apply piston (17).  

4. Use the J 22269-01 and compress the second apply piston assembly (17). See Special Tools and 

Equipment .  

5. Install the second apply piston retaining ring (14). 

 

2004 Hummer H2 

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

  

Fig. 456: Assembling 2-4 Servo Components 
Courtesy of GENERAL MOTORS CORP. 

6. Assemble the 2-4 servo components in the order shown: (12-15, 17, 20, 22-25, 28, 29). 

 

2004 Hummer H2 

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

  

Fig. 457: 2-4 Servo Assembly 
Courtesy of GENERAL MOTORS CORP. 

7. Install the 2-4 servo assembly into the 2-4 servo bore. 

 

2004 Hummer H2 

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