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Home >> Hummer >> 2008 >> H2 4D Utility Wagon >> Repair and Diagnosis >> External Pages >> Different car >> Section 496 (Automatic Transmission - 2ML70 - Repair Instructions - On Vehicle) >> Repair Instructions - On Vehicle >> Transmission Replacement >> Installation Procedure

Installation Procedure

WARNING: This page is about a different car, the 2012 GMC Yukon, 2012 Chevrolet Tahoe, and 2012 Cadillac Escalade. However, it is still accessible from the selected car via links, so may be relevant.
  1. Install the J 21366  converter holding strap onto the transmission bell housing to retain the torque dampener.
  2. Support the transmission with a transmission jack.
  3. Raise the transmission into place while simultaneously installing the fluid filler tube.
  4. Install the 3 phase cables to the transmission. Refer to Generator Control Module 3-Phase Cable Assembly Replacement .
  5. Remove the J 21366  converter holding strap from the transmission.
    6. Fig 1: Bolts And Studs
    GM1970190Courtesy of GENERAL MOTORS COMPANY
  6. Slide the transmission straight onto the locating pins while lining up the marks on the flex plate and the torque dampener.

    The torque dampener must rotate freely by hand.

    7. CAUTION:

    Refer to Fastener Caution .

  7. Install the bolts and studs (1-6) securing the transmission to the engine.

    Tighten 

    Tighten the bolts and studs to 50 (37 lb ft).

    8. Fig 2: Fluid Filler Tube Retaining Nut & Bracket
    GM1975010Courtesy of GENERAL MOTORS COMPANY
  8. Install the fluid filler tube bracket (1) to the transmission.
  9. Install the fluid filler tube retaining nut (2).

    Tighten 

    Tighten the nut to 18 (13 lb ft).

    10. Fig 3: Transmission Oil Cooler Pipes & Retaining Nut
    GM1971050Courtesy of GENERAL MOTORS COMPANY
  10. Install the transmission oil cooler pipes (1) to the transmission. Refer to Transmission Fluid Cooler Pipe Replacement .
  11. Install the transfer case, if equipped. Refer to Transfer Case Assembly Replacement .
    12. Fig 4: Fuel Pipe Bracket & Nuts
    GM1970176Courtesy of GENERAL MOTORS COMPANY
  12. Perform the following 2 steps if equipped with 2WD:
    1. Install the fuel pipe bracket (2).
    2. Install the fuel pipe bracket nuts (1).

      Tighten 

      Tighten the nuts to 50 (37 lb ft).

    13. Fig 5: Bracket Nut, Screw, Retainer & Pipes
    GM1970185Courtesy of GENERAL MOTORS COMPANY
  13. Install the fuel pipe retainer (2).
  14. Install the fuel pipe bracket screw (3).

    Tighten 

    Tighten the screw to 7 (62 lb in).

  15. Install the fuel pipe bracket nut (1).

    Tighten 

    Tighten the nut to 25 (18 lb ft).

    16. Fig 6: Bolt, Electrical Harness Connector, Speed Sensor, Harness Connector & Retaining Clip
    GM1971049Courtesy of GENERAL MOTORS COMPANY
  16. Connect the transmission electrical harness connector (5) to the transmission.
  17. Connect the transmission electrical harness connector (7) to the vehicle speed sensor.
  18. Install the transmission electrical harness retaining clip (6) to the transmission.
  19. Install the transmission electrical harness retaining bolt (1).

    Tighten 

    Tighten the bolt to 50 (37 lb ft).

    20. Fig 7: Locating Oxygen Sensor Electrical Connector, Electrical Harness Connector, Retaining Clip & Brackets
    GM1971048Courtesy of GENERAL MOTORS COMPANY
  20. Install the transmission electrical harness retaining clip (3) to the bracket (4).
  21. Install the transmission electrical harness retaining clip (5) to the bracket (6).
  22. Install the transmission electrical harness retaining clip (9) to the bracket (8).
  23. Connect the transmission electrical harness connector (7) to the transmission cover terminal housing.
  24. Connect the oxygen sensor electrical connector (1) to the transmission electrical harness connector (2).
  25. Install the oxygen sensor electrical connector (1) to the fuel pipe bracket.
    26. Fig 8: Transmission Electrical Harness Retainer Nut
    GM1971047Courtesy of GENERAL MOTORS COMPANY
  26. Install the transmission electrical harness retainer nut (1).

    Tighten 

    Tighten the nut to 25 (18 lb ft).

    27. Fig 9: Range Selector Lever Cable & Retainer
    GM1970184Courtesy of GENERAL MOTORS COMPANY
  27. Install the range selector lever cable (2) to the cable bracket.
  28. Install the range selector lever cable retainer (1).
  29. Connect the range selector lever cable (2) to the range select lever.
    30. Fig 10: Range Selector Lever Cable Heat Shield Bolts
    GM1970183Courtesy of GENERAL MOTORS COMPANY
  30. Install the range selector lever cable heat shield (2).
  31. Install the range selector lever cable heat shield bolts (1).

    Tighten 

    Tighten the bolts to 17 (13 lb ft).

    32. Fig 11: Transmission Heat Shield Bolts
    GM1970181Courtesy of GENERAL MOTORS COMPANY
  32. Install the transmission heat shield (2).
  33. Install the transmission heat shield bolts (1).

    Tighten 

    Tighten the bolts to 17 (13 lb ft).

  34. Install the vent hoses to the transmission and transfer case. Refer to Vent Hose Replacement (2WD) , Vent Hose Replacement (4WD) .
  35. Raise the transmission to installed height.
  36. Install the catalytic converter. Refer to Catalytic Converter Replacement (with Exhaust Clamp) .
  37. Install the transmission mount. Refer to Transmission Mount Replacement .
  38. Install the transmission support crossmember. Refer to Transmission Support Crossmember Replacement (4WD 2500 Series) , Transmission Support Crossmember Replacement (4WD 1500 Series) , Transmission Support Crossmember Replacement (2WD 2500 Series) , Transmission Support Crossmember Replacement (2WD 1500 Series) .
  39. Remove the transmission jack.
  40. Install the front propeller shaft, if equipped. Refer to Front Propeller Shaft Replacement .
  41. Install the rear propeller shaft. Refer to Rear Propeller Shaft Replacement .
  42. Rotate the engine crank bolt clockwise in order to access the torque dampener bolts.
    43. Fig 12: Flex Plate To Torque Dampener Bolts
    GM1970186Courtesy of GENERAL MOTORS COMPANY
  43. If reusing the torque dampener bolts, clean the bolt threads and apply LOCTITE™ 242, GM P/N 12345382 (Canadian P/N 10953489), or equivalent to the threads prior to installation.

    Install the 6 flex plate to torque dampener bolts (1).

    Tighten 

    Tighten the bolts to 65 (48 lb ft).

  44. Install the engine shield. Refer to Engine Shield Replacement .
    45. Fig 13: Flex Plate Inspection Cover & Bolt
    GM1970180Courtesy of GENERAL MOTORS COMPANY
  45. Install the right flex plate inspection cover (1).
  46. Install the right flex plate inspection cover bolt (2).

    Tighten 

    Tighten the bolt to 12 (106 lb in).

    47. Fig 14: Flex Plate Inspection Cover & Stud
    GM1970179Courtesy of GENERAL MOTORS COMPANY
  47. Install the left flex plate inspection cover (1).
  48. Install the left flex plate inspection cover stud (2).

    Tighten 

    Tighten the stud to 12 (106 lb in).

    49. Fig 15: Torque Dampener Access Plug
    GM1970178Courtesy of GENERAL MOTORS COMPANY
  49. Install the torque dampener access plug (1).
  50. Install the auxiliary fluid pump. Refer to Auxiliary Fluid Pump and Gasket Replacement .
  51. Lower the vehicle.
  52. Install the 3 phase cables to the under hood cable bracket and to the power inverter module. Refer to Generator Control Module 3-Phase Cable Assembly Replacement for completion of the 3 phase cable installation.
  53. Perform the high voltage enabling. Refer to High Voltage Enabling .
    54. CAUTION:

    Use Dexron VI transmission fluid only. Failure to use the proper fluid may result in transmission internal damage.

  54. Fill the transmission with the proper amount of transmission fluid. Refer to Fluid Capacity Specifications , and Transmission Fluid Level and Condition Check .
  55. If a replacement transmission is installed, program the TCM. Refer to Control Module References .
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