Hummer H3. Manual — part 760

6. Install the nut (3) securing the filler tube (1) to the AIR stud (2).

Tighten: Tighten the filler tube nut to 12.5 N.m (111 lb in).

7. Install the filler tube indicator.

8. Fill the transmission to the proper level with DEXRON® VI transmission fluid. Refer to

Transmission Fluid Check.

MANUAL SHIFT SHAFT SEAL REPLACEMENT

Tools Required

J 43909 Selector Shaft Seal Installer. See Special Tools.

J 43911 Selector Shaft Seal Remover. See Special Tools.

Removal Procedure

1. Remove the park/neutral back up switch. Refer to Park/Neutral Backup Switch

Replacement.

2007 Hummer H3

2007 TRANSMISSION Automatic Transmission - 4L60-E/4L65-E/4L70-E - H3

Fig. 106: Sliding Seal Remover Tool Over Selector Shaft
Courtesy of GENERAL MOTORS CORP.

2. Be sure that the jackscrew for the J 43911 is backed off and will not interfere with

installation of the removal tool. See Special Tools. Slide the seal remover tool over the
selector shaft (2) with the threaded end of the tool towards the seal.

3. Rotate the removal tool so that the threads on the end of the tool engage the steel shell (1) of

the seal. Use a wrench to be sure that the removal tool is firmly attached to the seal shell.

4. Rotate the jackscrew in the clockwise direction to remove the seal from the bore. Discard

the seal that was removed.

Installation Procedure

2007 Hummer H3

2007 TRANSMISSION Automatic Transmission - 4L60-E/4L65-E/4L70-E - H3

Fig. 107: Sliding New Selector Shaft Seal Over Selector Shaft
Courtesy of GENERAL MOTORS CORP.

1. Carefully slide a new selector shaft seal (1) over the selector shaft (2) with the wide face of

the steel case facing outward. Position the seal so that it is starting to enter the seal bore.

2. Obtain the J 43909 and remove the inner sleeve so that the tool will slide over the selector

shaft. See Special Tools.

3. Slide the J 43909 into position so that the end of the tool contacts the seal being installed.

See Special Tools. Use a mallet to strike the J 43909 and drive the new seal into the seal
bore until it is seated at the bottom of the bore.

4. Install the park/neutral back up switch. Refer to Park/Neutral Backup Switch

Replacement.

5. Fill the transmission to the proper level with DEXRON® VI transmission fluid. Refer to

Transmission Fluid Check.

VALVE BODY AND PRESSURE SWITCH REPLACEMENT

2007 Hummer H3

2007 TRANSMISSION Automatic Transmission - 4L60-E/4L65-E/4L70-E - H3

Removal Procedure

Fig. 108: Identifying Valve Body Electrical Components
Courtesy of GENERAL MOTORS CORP.

1. Ensure that removal of the valve body is necessary before proceeding.

The torque converter clutch (TCC) solenoid (1)

The pressure control solenoid (2)

The internal wiring harness (3)

The 2-3 shift solenoid (4)

IMPORTANT: The following components can be serviced without

removing the valve body from the transmission:

2007 Hummer H3

2007 TRANSMISSION Automatic Transmission - 4L60-E/4L65-E/4L70-E - H3