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Home >> Cadillac >> 2003 >> DeVille Base >> Repair and Diagnosis >> Transmission >> Automatic Trans >> Automatic Transaxle - 4T80-E >> Repair Instructions >> Transmission Replacement >> Installation Procedure

Installation Procedure

  1. Complete the following if previously removed from the transaxle:

    Important:  Ensure clearance is maintained between the transaxle and the following:

    • The brake pipes
    • The secondary AIR pipe
    • The power steering pressure hose
    • The wiring harnesses
  2. Carefully raise the transaxle to the engine in a tilted position in order to clear the starter nose cone.
  3. Align the transaxle with the engine and position the transaxle onto the engine dowels.
    NOTE: Refer to FASTENER NOTICE
  4. Install the engine to transaxle bolt (2).

    Tighten 

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

  5. Connect the vehicle speed sensor electrical connector.
  6. Install the engine to transaxle center brace and heat shield. Refer to ENGINE TO TRANSAXLE BRACE REPLACEMENT  .
    Fig 2: Installing Engine To Transaxle Center Brace & Heat Shield
    G02099089Courtesy of GENERAL MOTORS CORP.
  7. Install the bolts securing the front transaxle brace to the transaxle.

    Tighten 

    Tighten the bolts to 50 N.m (37 lb ft).

    Fig 3: Installing Bolts Securing Front Transaxle Brace To Transaxle
    G02099090Courtesy of GENERAL MOTORS CORP.
  8. Raise the transaxle and install the nut (1) securing the transaxle mount to the transaxle mount bracket.

    Tighten 

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

  9. Remove the transmission jack and the J 41160  .
    Fig 4: Installing Nut Securing Transaxle Mount To Bracket
    G02099091Courtesy of GENERAL MOTORS CORP.

    Important:  Line up the flywheel and converter using the alignment marks made during disassembly.

  10. Install the flywheel to converter bolts.

    Tighten 

    Tighten the bolts to 60 N.m (44 lb ft).

  11. Install the torque converter cover assembly. Refer to TORQUE CONVERTER COVER REPLACEMENT  .
    Fig 5: Installing Flywheel To Converter Bolts
    G02099092Courtesy of GENERAL MOTORS CORP.
  12. Install the engine to transaxle bracket lower bolt (1).

    Tighten 

    Tighten the bolt to 50 N.m (37 lb ft).

    Fig 6: Installing Engine To Transaxle Bracket Lower Bolt
    G02099093Courtesy of GENERAL MOTORS CORP.
  13. Install the right and left drive shafts (2) to the transaxle (1). Refer to AXLE SHAFTS
    Fig 7: Installing Right & Left Drive Shafts To Transaxle
    G02099094Courtesy of GENERAL MOTORS CORP.
  14. Install the 3 ground connections to the side of the transaxle.

    Tighten 

    Tighten the bolts to 50 N.m (37 lb ft).

  15. Connect the transaxle main electrical harness connector.
    Fig 8: Installing Ground Connections To Side Of Transaxle
    G02099095Courtesy of GENERAL MOTORS CORP.
  16. Install the left transaxle brace to the powertrain assembly.
  17. Install the bolt securing the left transaxle brace to the transaxle.

    Tighten 

    Tighten the left transaxle brace bolt to 50 N.m (37 lb ft).

    Tighten 

    Tighten the left transaxle brace nut to 41 N.m (30 lb ft).

  18. Install the front frame assembly to the vehicle. Refer to FRAME REPLACEMENT - FRONT
  19. Install the left front fascia extension. Refer to FASCIA EXTENSION REPLACEMENT - FRONT
  20. Install the stabilizer shaft links. Refer to STABILIZER SHAFT LINK REPLACEMENT (FE1, FE3) or STABILIZER SHAFT LINK REPLACEMENT (FE7)
    Fig 9: Installing Left Transaxle Brace & Bolt To Powertrain Assembly
    G02099096Courtesy of GENERAL MOTORS CORP.
  21. Lower the vehicle.
  22. Connect the lower transaxle oil cooler pipe to the transaxle. Refer to TRANSMISSION FLUID COOLER HOSE/PIPE REPLACEMENT  .
    Fig 10: Connecting Lower Transaxle Oil Cooler Pipe To Transaxle
    G02099097Courtesy of GENERAL MOTORS CORP.
  23. Install the upper transaxle oil cooler pipe to the radiator. Refer to TRANSMISSION FLUID COOLER HOSE/PIPE REPLACEMENT  .
    Fig 11: Installing Upper Transaxle Oil Cooler Pipe To Radiator
    G02099098Courtesy of GENERAL MOTORS CORP.
  24. Install the remaining transaxle to engine bolts (1).

    Tighten 

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

  25. Remove the engine support fixture. Refer to ENGINE SUPPORT FIXTURE
    Fig 12: Installing Remaining Transaxle To Engine Bolts
    G02099099Courtesy of GENERAL MOTORS CORP.
  26. Install the range selector cable bracket to the studs on the transaxle.
  27. Install the heater pipe to the stud on the transaxle.
  28. Install the nuts that retain the heater pipe and the range selector cable bracket to the transaxle.

    Tighten 

    Tighten the nuts to 25 N.m (18 lb ft).

  29. Connect the range selector cable terminal to the transaxle range selector lever.
  30. Install the Magnateer® wire to the retaining clip.
  31. Connect the transaxle vent tube to the accelerator bracket.
  32. Install the Magnateer wire to the retaining clip.
  33. Connect the transaxle vent tube to the accelerator bracket.
  34. Install the brake pipe retainers to the side rail.
    Fig 13: Connecting Range Selector Cable Terminal, Bracket, Clip & Nuts
    G02099100Courtesy of GENERAL MOTORS CORP.
  35. Install the upper and lower air cleaner assemblies. Refer to AIR CLEANER ASSEMBLY
  36. Install the upper filler panel (1). Refer to FILLER PANEL REPLACEMENT - UPPER
  37. Flush the transmission cooler.
  38. Add DEXRON® III transmission fluid as required. Refer to FLUID CAPACITY SPECIFICATIONS  and TRANSMISSION FLUID CHECKING PROCEDURE  .
  39. Check the front suspension alignment, adjust the toe as necessary.
  40. Clear the transmission adaptive pressures (TAPS). Refer to SCAN TOOL OUTPUT CONTROLS  .
  41. Check the front end alignment.
  42. Road test the vehicle and check for transaxle leaks.
    Fig 14: Installing Upper Filler Panel
    G02099101Courtesy of GENERAL MOTORS CORP.
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