Hummer H3. Manual — part 779

Fig. 175: View Of Inspection Plug
Courtesy of GENERAL MOTORS CORP.

15. Remove the inspection plug (3) from the transmission (1).

16. Mark the torque converter to flexplate/flywheel orientation to ensure proper realignment.

17. Remove the engine protection shield in order to access the harmonic balancer bolt. Refer to

Oil Pan Skid Plate Replacement .

2007 Hummer H3

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

Fig. 176: Locating Service Slot Plug
Courtesy of GENERAL MOTORS CORP.

18. Remove the service slot plug (1).

19. Repeat the following steps for all 3 torque converter bolts:

Rotate the harmonic balancer center bolt clockwise ONLY, in order to access the
torque converter bolt through the service slot.

Remove the torque converter bolt using one of the following:

18 mm crowfoot wrench

Short T50 TORX bit

20. Place an oil pan under the transmission fluid cooler pipes.

21. Disconnect the transmission oil cooler pipes from the transmission ONLY. Refer to

Transmission Fluid Cooler Hose/Pipe Replacement.

2007 Hummer H3

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

22. Plug the open outlet ports to prevent fluid loss and contamination.

23. Support and secure the transmission using a suitable transmission jack.

24. Remove the transmission crossmember. Refer to Transmission Support Crossmember

Replacement .

Fig. 177: Identifying Transmission Mounting Bolts
Courtesy of GENERAL MOTORS CORP.

25. Remove the 7 transmission mounting bolts and 2 studded mounting bolts (2).

26. Position the heater pipe (1) out of the way to allow clearance for the transmission.

2007 Hummer H3

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

Fig. 178: Identifying Engine Alignment Dowels
Courtesy of GENERAL MOTORS CORP.

27. Remove the remaining transmission mounting bolts (2).

28. Separate the transmission from the engine alignment dowels (1).

IMPORTANT: Ensure clearance is maintained between the transmission

and the following:

The catalytic converter

The engine wiring harness

2007 Hummer H3

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