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Home >> Cadillac >> 2015 >> XTS Base >> Repair and Diagnosis >> Transmission >> Automatic Trans >> Automatic Transmission - 6T70 (M7U M7W), 6T75 (M7V), Or 6T80 (Mhm) - Repair Instructions - On Vehicle >> Repair Instructions - On Vehicle >> Transmission Replacement (AWD with LF3 Engine) >> Installation Procedure

Installation Procedure

  1. Position the transmission to the engine.
    2. Fig 1: Transmission Bolts
    GM1831024Courtesy of GENERAL MOTORS COMPANY
    CAUTION:

    Refer to Fastener Caution .

  2. Install the transmission bolts (4) and tighten to 75 N.m (55 lb ft).
  3. Install the flywheel inspection cover (1).
  4. Install the flywheel inspection cover bolts (2, 3) and tighten to 75 N.m (55 lb ft).
    5. Fig 2: Starter
    GM1831212Courtesy 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.

  5. Install the torque converter to flywheel bolts and tighten to 62 N.m (46 lb ft).
  6. Install the starter. Refer to Starter Replacement (LF3) .
  7. Install the transfer case. Refer to Transfer Case Replacement (LF3 Engine) .
  8. Install the front transmission mount to the transmission. Refer to Transmission Front Mount Replacement .
  9. Install the rear transmission mount to the transmission. Refer to Transmission Rear Mount Replacement (AWD) .
  10. Install the left transmission mount to the transmission. Refer to Transmission Mount Replacement - Left Side .
    11. Fig 3: Upper Transmission To Engine Bolts
    GM1831026Courtesy of GENERAL MOTORS COMPANY
  11. Install the upper transmission to engine bolt (1, 2) and tighten to 75 N.m (55 lb ft).
    12. Fig 4: Transmission Fluid Cooler Pipe Components
    GM1809053Courtesy of GENERAL MOTORS COMPANY
  12. Install the transmission fluid cooler outlet hose and seal (2) to the transmission.
  13. Install the transmission fluid cooler pipe retainer nut (1) and tighten to 22 N.m (16 lb ft).
    14. Fig 5: Transmission Fluid Cooler Inlet Hose Components
    GM1809052Courtesy of GENERAL MOTORS COMPANY
  14. Install the transmission fluid cooler inlet hose and seal (2) to the transmission.
  15. Install the transmission fluid cooler pipe retainer nut (1) and tighten to 22 N.m (16 lb ft).
    16. Fig 6: Wire Harness Retainer & TCM Electrical Connector
    GM1831034Courtesy of GENERAL MOTORS COMPANY
  16. Connect the control valve body TCM electrical connector (1).
  17. Install the wire harness retainer (2) to the control valve body cover stud and tighten the nut to 12 N.m (106 lb in).
  18. Install the transmission range select lever cable and bracket.
  19. Install the battery tray. Refer to Battery Tray Replacement .
  20. Adjust the automatic transmission range selector lever cable. Refer to Range Selector Lever Cable Adjustment .
  21. Fill the transmission with fluid. Refer to Transmission Fluid Drain and Fill .
  22. If a NEW TCM has been installed into the vehicle, the NEW module needs to be reprogrammed. Refer to Service Programming System (SPS) .
    23. NOTE:

    The Reset Transmission Adapts 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
  23. Perform the Reset Transmission Adapts. Refer to Reset Transmission Adapts .
  24. Road test the vehicle.
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