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Home >> GMC >> 2017 >> Acadia SL >> Repair and Diagnosis >> External Pages >> Different car >> Section 43 (Automatic Transmission - 8L45 (M5N M5T) Or 8L90 (M5U) - Repair Instructions - On Vehicle) >> Repair Instructions - On Vehicle >> Transmission Replacement (M5T with LCV Engine) >> Installation Procedure

Installation Procedure

WARNING: This page is about a different car, the 2016 Cadillac ATS. However, it is still accessible from the selected car via links, so may be relevant.
  1. Remove the J-21366  strap from the transmission bell housing.
  2. Install the transmission to the vehicle.
  3. Fig 1: Transmission Bolts
    GM4089977Courtesy of GENERAL MOTORS COMPANY
    CAUTION:

    Refer to Fastener Caution .

  4. Install the transmission to engine bolts (1, 2, 3) and tighten to 58 N.m (43 lb ft).
  5. Fig 2: Transmission Vent Hose And Retainer
    GM4089964Courtesy of GENERAL MOTORS COMPANY
    Fig 3: Left Upper Transmission Bolts
    GM4089960Courtesy of GENERAL MOTORS COMPANY
  6. Connect the transmission vent hose (2) and retainer (1).

    Install the left upper transmission to engine bolts (1, 2) and tighten to 58 N.m (43 lb ft).

  7. Fig 4: Lower Right Transmission Bolts
    GM4109160Courtesy of GENERAL MOTORS COMPANY
  8. Install the lower right transmission to engine bolts (1, 2) and tighten to 58 N.m (43 lb ft).
  9. Fig 5: Lower Left Transmission Bolts
    GM4089733Courtesy of GENERAL MOTORS COMPANY
  10. Install the lower left transmission to engine bolts (1, 2) and tighten to 58 N.m (43 lb ft).
  11. Connect the electrical wiring harness retainers to the transmission to engine fasteners and to the transmission case.
  12. Install the transmission support. Transmission Support Replacement (Automatic RWD)Transmission Support Replacement (Automatic AWD)
  13. Remove the transmission jack from under the vehicle.
  14. Align the torque converter to flexplate orientation marks made during the removal procedure.
  15. Fig 6: Torque Converter Bolts
    GM4109165Courtesy of GENERAL MOTORS COMPANY
    NOTE:

    Torque converter bolts are self-locking and must be replaced with NEW torque converter bolts every time the bolts are removed.

  16. Complete the following steps for all torque converter bolts (1):
    1. Rotate the harmonic balancer center bolt clockwise ONLY, in order to align the torque converter bolt holes in the flexplate with the starter opening in the engine block.
    2. Install all NEW torque converter bolts (1) and tighten to 63 N.m (46 lb ft).
  17. Fig 7: Transmission Close Out Plug
    GM4089020Courtesy of GENERAL MOTORS COMPANY
  18. Install the transmission close out plug (1).
  19. Fig 8: Catalytic Converter Shield
    GM4089948Courtesy of GENERAL MOTORS COMPANY
  20. Install the catalytic converter shield (4) to the engine assembly and tighten the fasteners (1, 2, 3) to 10 N.m (89 lb in).
  21. Catalytic Converter Replacement (LCV) » Install
  22. Fig 9: Transmission Fluid Cooler Pipes
    GM4083607Courtesy of GENERAL MOTORS COMPANY
  23. Install the transmission fluid cooler inlet and outlet pipe (1) to the transmission. Transmission Fluid Cooler Inlet and Outlet Pipe Replacement (LCV Without V03)Transmission Fluid Cooler Inlet and Outlet Pipe Replacement (LCV With V03)
  24. Connect the wiring harness retainers and connectors to the transmission.
  25. Fig 10: Transmission Range Selector Lever Cable
    GM4032383Courtesy of GENERAL MOTORS COMPANY
  26. Install the cable in the bracket, then slide the retainer (4) rearward to lock the transmission range selector lever cable in the bracket.
  27. Connect the transmission range selector lever cable terminal (1) to the transmission manual shift lever pin (2).
  28. Adjust the cable. Range Selector Lever Cable Adjustment 
  29. Two-Piece Propeller Shaft Replacement (LTG, LGX, LCV) » Install
  30. {If equipped} Front Axle Propeller Shaft Replacement (LGX, LTG) » Install
  31. Starter Replacement (LCV, LTG) » Install
  32. Check the transmission fluid level and fill if necessary. Transmission Fluid Level and Condition Check
  33. Lower the vehicle.
  34. Perform the solenoid valve characterization. Solenoid Valve Characterization Reprogramming
  35. NOTE:

    The Service Fast Learn procedure must be performed when one of the following repairs have been made to the vehicle. Failure to perform the procedure after one of the following repairs may result in poor transmission performance, as well as transmission DTCs being set:

    The service fast learn procedure must be performed when any of the following repairs has been made to the transmission.

    • Pressure regulating solenoid replacement
    • Valve body repair or replacement
    • Any service/repair in response to a shift quality concern
    • Any internal transmission service, repair, overhaul, or replacement
    • Torque converter replacement
    • TCM replacement
    • Transmission assembly replacement
  36. Perform the service fast learn procedure. Transmission Service Fast Learn Procedure