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Home >> GMC >> 2018 >> Acadia Denali, FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 398 (Automatic Transmission - 6T50 (M2D) - Repair Instructions - On Vehicle) >> Repair Instructions - On Vehicle >> Transmission Replacement (Front Wheel Drive) >> Installation Procedure

Installation Procedure

WARNING: This page is about a different car, the 2017 GMC Acadia. However, it is still accessible from the selected car via links, so may be relevant.
  1. Raise the transmission with the transmission jack and position the transmission to the engine.
  2. Fig 1: Front Transmission To Engine Bolts
    GM4375284Courtesy of GENERAL MOTORS COMPANY
    CAUTION:

    Refer to Fastener Caution .

  3. Install the front transmission bolts (1, 2, 3) and tighten to 58 N.m (43 lb ft).
  4. Install the oil pump flow control valve heat shield. Refer to Oil Pump Flow Control Valve Heat Shield Replacement
  5. Fig 2: Lower Rear Transmission Fasteners
    GM4375296Courtesy of GENERAL MOTORS COMPANY
  6. Install the lower rear transmission to engine bolts (1, 2) and tighten to 58 N.m (43 lb ft).
  7. Remove the transmission jack.
  8. Align the mark of the flywheel to the mark on the torque converter for reassembly.
  9. Fig 3: Torque Converter To Flywheel Bolts
    GM4316014Courtesy of GENERAL MOTORS COMPANY
    NOTE:

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

  10. Install the torque converter to flywheel bolts (1) and tighten to 62 N.m (46 lb ft).
  11. Install the starter. Refer to Starter Replacement (LGX)Starter Replacement (LCV - FWD)
  12. Install the left transmission mount to the transmission. Refer to Transmission Mount Replacement - Left Side 
  13. Connect the wheel drive shafts to the transmission. Refer to Front Wheel Drive Half Shaft Replacement - Left Side , and Front Wheel Drive Shaft Replacement - Right Side (FWD)
  14. Install the drivetrain and front suspension cradle. Refer to Drivetrain and Front Suspension Cradle Removal and Installation (FWD)
  15. Install the rear transmission mount to the transmission. Refer to Transmission Rear Mount Replacement (Front Wheel Drive) .
  16. Install the front transmission mount to the transmission. Refer to Transmission Front Mount Replacement 
  17. Remove the engine support fixture. Refer to Engine Support Fixture
  18. Fig 4: Upper Transmission To Engine Bolts
    GM4375268Courtesy of GENERAL MOTORS COMPANY
  19. Install the upper transmission to engine bolts (1, 2, 3) and tighten to 58 N.m (43 lb ft).
  20. Fig 5: Fluid Cooler Inlet Hose, Outlet Hose, Retainer And Nuts
    GM1998666Courtesy of GENERAL MOTORS COMPANY
  21. Install the transmission fluid cooler outlet hose (5) to the transmission.
  22. Install the transmission fluid cooler pipe retainer nut (4) and tighten to 22 N.m (16 lb ft).
  23. Install the transmission fluid cooler inlet hose (1) to the transmission.
  24. Install the transmission fluid cooler pipe retainer nut (3) and tighten to 22 N.m (16 lb ft).
  25. Fig 6: Control Valve Body Transmission Control Module (TCM) Electrical Connector
    GM1999448Courtesy of GENERAL MOTORS COMPANY
  26. Connect the control valve body TCM electrical connector (1).
  27. Clip the engine wiring harness to the transmission.
  28. Install the transmission range select lever cable to the transmission. Refer to Range Selector Lever Cable Replacement 
  29. Adjust the automatic transmission range selector lever cable. Refer to Range Selector Lever Cable Adjustment 
  30. Install the battery tray. Refer to Battery Tray Replacement
  31. Fill the transmission with fluid. Refer to Transmission Fluid Drain and Fill 
  32. If a NEW TCM has been installed into the vehicle, the NEW module needs to be reprogrammed. Refer to Service Programming System (SPS)
  33. 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
  34. Perform the Transmission Adaptive Values Learn procedure. Refer to Transmission Adaptive Values Learn
  35. Road test the vehicle.