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Home >> GMC >> 2021 >> Acadia SL >> Repair and Diagnosis >> Transmission >> Automatic Trans >> Automatic Transmission - 9T50 (M3H), 9T60 (M3G) Or 9T65 (M3W) - Repair Instructions - On Vehicle >> Repair Instructions - On Vehicle >> Transmission Replacement (All Wheel Drive with LGX) >> Installation Procedure

Installation Procedure

  1. Raise the transmission with the transmission jack and position the transmission to the engine.
  2. Install the transmission bolts (1, 2) and tighten to 58 N.m (43 lb ft).
    GM4738489Courtesy of GENERAL MOTORS COMPANY
    CAUTION:

    Refer to Fastener Caution .

  3. Install and tighten the 3 transmission bolts (1) to 58 N.m (43 lb ft).
    GM5627349Courtesy of GENERAL MOTORS COMPANY
  4. Remove the transmission jack.
  5. Align the mark of the flex plate to the mark on the torque converter for reassembly.
  6. Install the torque converter to flex plate bolts (1) and tighten to 60 N.m (44 lb ft).
    GM4737566Courtesy of GENERAL MOTORS COMPANY
    NOTE:

    If reusing the torque converter bolts, clean the threads and apply threadlocker to the threads prior to installation. Adhesives, Fluids, Lubricants, and Sealers

  7. Install the starter. Starter Replacement (LGX)
  8. Using the engine support fixture raise the powertrain into place.
  9. Install the left transmission mount to the transmission. Transmission Mount Replacement 
  10. Install the front transmission mount to transmission bolts. Transmission Front Mount Replacement .
  11. Install the left side front wheel drive half shaft. Front Wheel Drive Half Shaft Replacement - Left Side
  12. Install the power transfer unit from the vehicle. Power Transfer Unit Case Replacement (LGX)
  13. Install the drivetrain and front suspension cradle. Drivetrain and Front Suspension Cradle Removal and Installation
  14. Remove the engine support fixture. Engine Support Fixture
  15. Install the upper transmission to engine bolts (1, 2, 3) and tighten to 58 N.m (43 lb ft).
    GM4738546Courtesy of GENERAL MOTORS COMPANY
  16. Position the heater water auxiliary pump (2) to it's original position.
    GM4738922Courtesy of GENERAL MOTORS COMPANY
  17. Install the heater water auxiliary pump bolt (1) and tighten to 22 N.m (16 lb ft).
  18. Reposition the body wiring harness bracket with wiring harness (3) as necessary.
    GM5627689Courtesy of GENERAL MOTORS COMPANY
  19. Install the body wiring harness bracket bolt (2) and tighten to 22 N.m (16 lb ft).
  20. Connect the auxiliary fluid accumulator electrical connector (1).
  21. Connect the transmission fluid cooler outlet pipe (1, 2) at the thermal bypass valve. Transmission Fluid Cooler Outlet Pipe Replacement (LGX, with V08)
    GM4707558Courtesy of GENERAL MOTORS COMPANY
  22. Connect the control valve body transmission control module electrical connector (1), then clip the wiring harness to the cover.
    GM4707537Courtesy of GENERAL MOTORS COMPANY
  23. Install the electrical harness bracket (2) to the control valve body cover.
    GM4707670Courtesy of GENERAL MOTORS COMPANY
  24. Install the electrical harness bracket nuts (1) and tighten to 9 N.m (80 lb in).
  25. Clip the engine wiring harness to the transmission.
  26. Connect the electronic transmission range selector manual park release cable to the transmission. Electronic Transmission Range Selector Manual Park Release Cable Replacement 
  27. Fill the transmission with correct fluid. Adhesives, Fluids, Lubricants, and Sealers
  28. Check transmission fluid level. Transmission Fluid Level and Condition Check
  29. Install the battery tray. Battery Tray Replacement
    NOTE:

    The Transmission Adaptive Values 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:

    • Transmission internal service/overhaul
    • Valve body repair or replacement
    • Control solenoid valve assembly replacement
    • TCM software/calibration update
    • Any service in response to a shift quality concern
  30. Reprogram the transmission. Q77 Transmission Control Solenoid Valve Characterization Programming
  31. Road test the vehicle.
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