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Transaxle (4T80-E): Installation

WARNING: This page is about a different car, the 2003 Oldsmobile Aurora and 2002 Oldsmobile Aurora. However, it is still accessible from the selected car via links, so may be relevant.
  1. Complete the following if previously removed from the transaxle:
    • Install the rear transaxle bracket.
    • Install the left transaxle bracket.
    • Install the transaxle cooler pipe.
    WARNING: 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.
  4. Install the transaxle-to-engine bolt (2). See Figure. Tighten to specification. See TORQUE SPECIFICATIONS .
  5. Connect the vehicle speed sensor electrical connector.
  6. Install the engine-to-transaxle center brace and heat shield. See Figure.
  7. Install the bolts securing the front transaxle brace to the transaxle. See Figure.
  8. Raise the transaxle and install the nut (1) securing the transaxle mount to the transaxle mount bracket. See Figure. Tighten nut to specification. See TORQUE SPECIFICATIONS .
  9. Remove the transaxle jack and adapter.
    WARNING: Line up the flywheel and converter using the alignment marks made during disassembly.
  10. Install torque converter-to-flywheel bolts. See Figure. Tighten to specification. See TORQUE SPECIFICATIONS .
  11. Install the torque converter cover assembly.
  12. Install the engine-to-transaxle bracket lower bolt (1). See Figure. Tighten to specification. See TORQUE SPECIFICATIONS .
  13. Install the right and left drive shafts (2) to the transaxle (1). See Figure.
  14. Install the 3 ground connections to the side of the transaxle. See Figure. Tighten to specification. See TORQUE SPECIFICATIONS .
  15. Connect the transaxle main electrical harness connector.
  16. Install the left transaxle brace to the powertrain assembly. See Figure.
  17. Install the bolt and nut securing the left transaxle brace to the transaxle. Tighten to specification. See TORQUE SPECIFICATIONS .
  18. Install the front frame assembly to the vehicle. See FRAME REPLACEMENT .
  19. Install the left front fascia extension.
  20. Install the stabilizer shaft links. See appropriate FRONT article in SUSPENSION.
  21. Lower the vehicle.
  22. Connect the lower transaxle oil cooler pipe to the transaxle. See Figure.
  23. Install the upper transaxle oil cooler pipe to the radiator. See Figure.
  24. Install the remaining transaxle-to-engine bolts (1). See Figure. Tighten to specification. See TORQUE SPECIFICATIONS .
  25. Remove the engine support fixture.
  26. Install the range selector cable bracket to the studs on the transaxle. See Figure.
  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 to specification. See TORQUE SPECIFICATIONS .
  29. Connect the range selector cable terminal (1) to the transaxle range selector lever. See Figure.
  30. Install the Magnasteer wire to the retaining clip.
  31. Connect the transaxle vent tube to the accelerator bracket.
  32. Install the brake pipe retainers to the side rail.
  33. Install the upper and lower air cleaner assemblies.
  34. Flush the transaxle oil cooler. See LUBRICATION in appropriate SERVICING article.
  35. Fill transaxle with appropriate fluid to proper level. See LUBRICATION in appropriate SERVICING article.
  36. Check the front wheel alignment. See appropriate SPECIFICATIONS & PROCEDURES article in WHEEL ALIGNMENT. Adjust the toe as necessary.
  37. Clear the transaxle adaptive pressures (TAPS). See appropriate DIAGNOSIS article.
  38. Road test the vehicle and check for transaxle leaks.
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