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Home >> Buick >> 2005 >> LeSabre Custom, 4T65E/MN3 >> Repair and Diagnosis >> Transmission >> Automatic Trans >> Automatic Transaxle - Introduction & Repair Instructions >> Repair Instructions >> Transmission Replacement >> Installation Procedure

Installation Procedure

    Fig 1: Left Transaxle Mount & Bracket
    GM667205Courtesy of GENERAL MOTORS CORP.
  1. Install the left transaxle bracket (1) to the transaxle.
    2. NOTE: Refer to Fastener Notice in Cautions and Notices.
  2. Install the left transaxle bracket bolts.

    Tighten:  Tighten the left transaxle bracket bolts to 110 N.m (81 lb ft).

    3. Fig 2: Removing/Installing Mount Bracket To Engine
    GM667200Courtesy of GENERAL MOTORS CORP.
  3. Install the rear transaxle bracket (1) to the transaxle.
  4. Install the rear transaxle bracket bolts.

    Tighten:  Tighten the rear transaxle bracket bolts to 63 N.m (46 lb ft).

    5. Fig 3: View of Transaxle To Engine Mounting
    GM160965Courtesy of GENERAL MOTORS CORP.
  5. Install the transaxle into the vehicle and align the engine alignment dowels (1 and 5).
  6. Install the transaxle case to engine bolts (1and 6).

    Tighten:  Tighten the lower transaxle bolts to 75 N.m (55 lb ft).

    7. Fig 4: Locating Strut Bracket-To-Engine Bolts
    GM732550Courtesy of GENERAL MOTORS CORP.
  7. Install the torque strut bracket.
  8. Install the torque strut bracket to engine bolts.

    Tighten:  Tighten the torque strut bracket to engine bolts to 65 N.m (48 lb ft).

    9. Fig 5: Transaxle Brace To Transaxle Bolts
    GM732537Courtesy of GENERAL MOTORS CORP.
  9. Install the torque strut bracket to transaxle bolts.

    Tighten:  Tighten the torque strut bracket to transaxle bolts to 36 N.m (26 lb ft).

  10. Connect vehicle speed sensor electrical connector.
  11. Remove the transaxle jack
    12. Fig 6: Locating Torque Converter Bolts
    GM166594Courtesy of GENERAL MOTORS CORP.
    IMPORTANT:
    • Align the mark made on the torque converter with the mark made on the flywheel made in the disassembly unless installing a new converter.
    • Tighten all the torque converter to flywheel bolts twice.
  12. Install the flywheel to torque converter bolts.

    Tighten:  Tighten the flywheel to torque converter bolts to 63 N.m (47 lb ft).

  13. Install the torque converter cover. Refer to Torque Converter Cover Replacement .
  14. Install the transaxle fluid filler tube. Refer to Filler Tube and Seal Replacement .
  15. Connect the transmission oil cooler hoses to the transaxle. Refer to Transmission Fluid Cooler Hose/Pipe Replacement .
    16. IMPORTANT: Use care when installing the right side drive axle into the transaxle case. The splined shaft of the drive axle can easily damage the seal.
  16. Install the left and the right drive axle into the transaxle. Refer to Wheel Drive Shaft Replacement in Wheel Drive Shafts.
    17. Fig 7: Front Transaxle Mount Bracket
    GM667212Courtesy of GENERAL MOTORS CORP.
  17. Install the front transaxle mount bracket with mount attached. Refer to Transmission Mount Bracket Replacement - Front .
  18. Install the frame. Refer to Frame Replacement in Frame and Underbody.
  19. Install the left transaxle mount. Refer to Transmission Mount Replacement - Left .
    20. Fig 8: View Of EBCM/BPMV Assembly
    GM458866Courtesy of GENERAL MOTORS CORP.
  20. Position the brake pressure modulator valve (1) into the bracket (3).

    Tighten:  Tighten the two nuts (2) to 10 N.m (89 lb in).

  21. Install the brake line retainers onto the frame.
    22. Fig 9: View Of Steering Gear Mounting Bolts
    GM337379Courtesy of GENERAL MOTORS CORP.
  22. Install the power steering gear mounting bolts.

    Tighten:  Tighten the bolts to 75 N.m (55 lb ft).

  23. Install the power steering line retainers onto the frame.
  24. Install the power steering gear heat shield. Refer to Power Steering Gear Heat Shield Replacement in Power Steering System.
    25. Fig 10: Locating Steering Rack-To-Intermediate Shaft Pinch Bolt
    GM105357Courtesy of GENERAL MOTORS CORP.
    CAUTION: When installing the intermediate shaft make sure that the shaft is seated prior to pinch bolt installation. If the pinch bolt is inserted into the coupling before shaft installation, the two mating shafts may disengage. Disengagement of the two mating shafts will cause loss of steering control which could result in personal injury.
  25. Connect the intermediate shaft to the power steering gear.
  26. Install the intermediate shaft lower pinch bolt.

    Tighten:  Tighten the bolt to 45 N.m (33 lb ft).

    27. Fig 11: Front Fascia Extensions
    GM508125Courtesy of GENERAL MOTORS CORP.
  27. Install both of the front fascia extensions (3). Refer to Fascia Extension Replacement - Front in Bumpers.
  28. Install the front air deflector. Refer to Air Deflector Replacement - Front in Body Front End.
  29. Install the front tire and wheel assembly. Refer to Tire and Wheel Removal and Installation in Tires and Wheels.
  30. Lower the vehicle.
    31. Fig 12: View of Transaxle To Engine Mounting
    GM160965Courtesy of GENERAL MOTORS CORP.
  31. Install the upper transaxle case to engine bolts (2-5).

    Tighten:  Tighten the transaxle bolts to 75 N.m (55 lb ft).

  32. Remove the engine support fixture.
    33. Fig 13: View of Range Selector Lever and Transaxle Wiring Harness Retainer
    GM772540Courtesy of GENERAL MOTORS CORP.
  33. Install the range selector cable bracket and cable.

    Tighten:  Tighten the range selector cable bracket nuts to 25 N.m (18 lb ft).

  34. Install the range selector cable onto the range selector lever.
  35. Check adjustment of the range selector cable. Re-adjust as needed. Refer to Automatic Transmission Range Selector Cable Adjustment .
    36. Fig 14: Ground Cable Bolt To/From Transaxle
    GM678816Courtesy of GENERAL MOTORS CORP.
  36. Install ground cable and bolt (1) to transaxle.

    Tighten:  Tighten the ground cable bolt to 17 N.m (13 lb ft).

    37. Fig 15: Disconnecting/Reconnecting Wiring Harness Retainer & Connector
    GM678825Courtesy of GENERAL MOTORS CORP.
  37. Connect the transaxle electrical connector C100 (2).
  38. Install the wiring harness (3) into the wiring harness retainer (1) on the transaxle.
  39. Install the air cleaner assembly. Refer to Air Cleaner Assembly Replacement in Engine Controls - 3.8L.
  40. Connect the negative battery cable. Refer to Battery Negative Cable Disconnect/Connect Procedure in Engine Electrical.
    41. Fig 16: Identifying J 42640
    GM333146Courtesy of GENERAL MOTORS CORP.
  41. Remove the J 42640  from the steering column.
  42. Fill the transaxle to the proper level. Refer to Fluid Capacity Specifications .
  43. Inspect the transaxle fluid level. Refer to Transmission Fluid Checking Procedure .
  44. Inspect for fluid leaks.
  45. Clear transmission adaptive pressures (TAPS). Refer to Scan Tool Output Controls .
  46. Check the front end alignment.
  47. Road test the vehicle and check for transaxle leaks.
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