Hummer H2. Manual - part 2537

4. Install the low and reverse clutch support (679), roller clutch and roller clutch race (675) assembly into 

the case. Position the hub side down during the installation. 

Fig. 121: Identifying Low And Reverse Support Retainer Ring 
Courtesy of GENERAL MOTORS CORP. 

IMPORTANT: Align the opening of the low and reverse clutch support retainer ring (676) 

with the low and reverse clutch support retainer spring (680). It is 
important that the low and reverse clutch support retainer ring opening is 
centered around the retainer spring. This will allow the retainer ring to 
fully seat in all of the transmission case lugs. If the retainer ring lays up 
against the retainer spring, the retainer ring will not fully seat. Possible 
damage to the transmission case lugs can occur if the low and reverse 

 

2004 Hummer H2 

2004 TRANSMISSION/TRANSAXLE Automatic Transmission - Overhaul - 4L60-E/4L65-E

  

5. Install the low and reverse support retainer ring (676) into the case.  

REACTION SUN GEAR INSTALLATION 

Tools Required 

z

J 34196-B Transmission Bushing Service Set. See Special Tools and Equipment .  

z

J 8092 Universal Driver Handle - 3/4 in  

clutch support retainer ring is not fully seated in the transmission case 
lug.

IMPORTANT: Do not remove the retaining ring (671), except to replace it.

 

2004 Hummer H2 

2004 TRANSMISSION/TRANSAXLE Automatic Transmission - Overhaul - 4L60-E/4L65-E

  

Fig. 122: Inspection Areas On Reaction Sun Gear 
Courtesy of GENERAL MOTORS CORP. 

1. Inspect the reaction sun gear (673) for the following defects: 

z

Nicks  

z

Scores  

z

Damaged spline or teeth  

z

A worn bushing (672)  

z

A loose or weak retaining ring (671) 

 

2004 Hummer H2 

2004 TRANSMISSION/TRANSAXLE Automatic Transmission - Overhaul - 4L60-E/4L65-E

  

Fig. 123: Removing Reaction Sun Bushing From Reaction Sun Gear 
Courtesy of GENERAL MOTORS CORP. 

2. If the reaction sun gear bushing (672) needs replacement, use J 34196-1 which is part of kit J 34196-B 

with J 8092 to remove the reaction sun bushing (672) from the reaction sun gear (673). 

 

2004 Hummer H2 

2004 TRANSMISSION/TRANSAXLE Automatic Transmission - Overhaul - 4L60-E/4L65-E