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Home >> Hummer >> 2009 >> H2 4D Utility Pickup >> Repair and Diagnosis >> Transmission >> Hydraulic Diagrams >> Automatic Transmission - 6L80 - Removal & Installation, Service, Overhaul, Troubleshooting & Diagnosis >> On-Vehicle Repair Instructions >> Transmission Replacement >> Installation Procedure

Installation Procedure

  1. Install the J 21366  onto the transmission bell housing to retain the torque converter.
  2. Support the transmission with a transmission jack.
  3. Raise the transmission into place while simultaneously installing the fluid indicator tube.
  4. Remove the J 21366  from the transmission.
  5. Slide the transmission straight onto the locating pins while lining up the marks on the flex plate and the torque converter.

    The torque converter must rotate freely by hand.

    6. Fig 1: Identifying Transmission Bolts & Studs
    GM1971086Courtesy of GENERAL MOTORS CORP.
    CAUTION: Refer to Fastener Caution .
  6. Install the bolts and studs (1-8) securing the transmission to the engine.

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

    7. Fig 2: Identifying Transmission Cooler Lines & Bolt
    GM1705099Courtesy of GENERAL MOTORS CORP.
  7. Connect the transmission oil cooler lines to the transmission. Refer to Transmission Fluid Cooler Hose/Pipe Replacement .
  8. Install the transfer case. Refer to Transfer Case Assembly Replacement .
    9. Fig 3: Identifying Range Selector Cable Components
    GM1971076Courtesy of GENERAL MOTORS CORP.
  9. Install the shift control cable (3) to the cable bracket (1).
  10. Install the shift control cable retainer (2).
  11. Connect the shift control cable (3) to the range select lever (4)
    12. Fig 4: Identifying Fuel Pipe Bracket Screw & Nut
    GM1971078Courtesy of GENERAL MOTORS CORP.
  12. Install the fuel pipe bracket nut (1).

    Tighten:  Tighten the nut to 25 N.m (18 lb ft).

  13. Install the fuel pipe bracket screw (2).

    Tighten:  Tighten the screw to 9 N.m (80 lb in).

    14. Fig 5: Identifying Transmission Electrical Harness & Retaining Screw
    GM1971080Courtesy of GENERAL MOTORS CORP.
  14. Connect the transmission electrical harness connector (2).
  15. Install the transmission electrical harness retaining screw (1).

    Tighten:  Tighten the screw to 9 N.m (80 lb in).

  16. Install the vent hose to the transmission and transfer case.
  17. Install the transmission heat shield. Refer to Transmission Heat Shield Replacement .
  18. Raise the transmission to installed height.
  19. Install the transmission mount. Refer to Transmission Mount Replacement .
  20. Install the transmission support. Refer to Transmission Support Replacement .
  21. Remove the transmission jack.
    22. Fig 6: Identifying Flex Plate To Torque Converter Bolts
    GM1971085Courtesy of GENERAL MOTORS CORP.
  22. If reusing the torque converter 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.
  23. Install the flex plate to torque converter bolts (1).

    Tighten:  Tighten the bolts to 65 N.m (48 lb ft).

    24. Fig 7: Identifying Right Flex Plate Inspection Cover & Bolt
    GM1971084Courtesy of GENERAL MOTORS CORP.
  24. Install the right flex plate inspection cover (1).
  25. Install the right flex plate inspection cover bolt (2).

    Tighten:  Tighten the bolt to 12 N.m (106 lb in).

  26. Install the starter motor. Refer to Starter Motor Replacement .
    27. Fig 8: Identifying Left Flex Plate Inspection Cover & Bolt
    GM1975098Courtesy of GENERAL MOTORS CORP.
  27. Install the left flex plate inspection cover (1).
  28. Install the left flex plate inspection cover bolt (2).

    Tighten:  Tighten the bolt to 12 N.m (106 lb in).

    29. Fig 9: Identifying Torque Converter Access Plugs
    GM1971083Courtesy of GENERAL MOTORS CORP.
  29. Install the torque converter access plugs (1, 2).
  30. Install the front propeller shaft. Refer to Front Propeller Shaft Replacement .
  31. Install the rear propeller shaft. Refer to Rear Propeller Shaft Replacement .
  32. Install the catalytic converter. Refer to Catalytic Converter Replacement .
  33. Install the catalytic converter guard. Refer to Catalytic Converter Guard Replacement .
  34. Lower the vehicle.
  35. Connect the negative battery cable. Refer to Battery Negative Cable Disconnection and Connection
  36. Fill the transmission to the proper level. Refer to Fluid Capacity Specifications .
    37. NOTE: It is recommended that transmission adaptive pressure (TAP) information be reset.
    Resetting the TAP values using a scan tool will erase all learned values in all cells. As a result, the engine control module (ECM), powertrain control module (PCM), or transmission control module (TCM) will need to relearn TAP values. Transmission performance may be affected as new TAP values are learned.
  37. Reset the TAP values. Refer to Transmission Adaptive Functions .
  38. If a replacement transmission is installed, program the TCM. Refer to Control Module References .
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