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Home >> Cadillac >> 2006 >> Escalade AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 784 (Automatic Transmission - 4L80-E/4L85-E - Introduction (2 Of 2)) >> Repair Instructions >> Transmission Replacement >> Removal Procedure

Removal Procedure

WARNING: This page is about a different car, the 2006 GMC Yukon XL, 2006 Chevrolet Suburban, and 2006 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.
    Fig 1: Identifying Crossmember & Bolts
    GM652595Courtesy of GENERAL MOTORS CORP.
  1. Disconnect the negative battery cable. Refer to Battery Negative Cable Disconnect/Connect Procedure in Engine Electrical.
  2. Remove the rear propeller shaft. Refer to Propeller Shaft Replacement - Rear in Propeller Shaft.
  3. Support the transmission with a suitable jack.
  4. Remove the transmission mount nuts.
    5. Fig 2: Identifying Crossmember & Bolts
    GM652595Courtesy of GENERAL MOTORS CORP.
  5. Remove the transmission support bolts/nuts.
  6. Remove the transmission support.
  7. Raise the transmission slightly and remove the transmission support from the vehicle.
  8. Remove the exhaust manifold pipe. Refer to Exhaust Manifold Pipe Replacement (6.0L and 8.1L Engines) in Engine Exhaust.
  9. Remove the transfer case, if equipped. Refer to:
    10. Fig 3: Transmission Mount & Bolts
    GM858996Courtesy of GENERAL MOTORS CORP.
  10. Remove the transmission mount bolts and mount.
    11. Fig 4: View Of Retainer Securing Cable To Bracket
    GM858985Courtesy of GENERAL MOTORS CORP.
  11. Ensure the transmission manual shaft is positioned in mechanical park.
  12. Remove the retainer that secures the cable to the bracket.
    13. Fig 5: View Of Range Selector Cable End At Transmission Range Selector Lever Ball Stud
    GM738167Courtesy of GENERAL MOTORS CORP.
  13. Remove the range selector cable end (2) from the transmission range selector lever ball stud (1).
  14. Depress the tangs and remove the cable from the bracket.
    15. Fig 6: Disconnecting The Input Speed Sensor Electrical Connector
    GM859361Courtesy of GENERAL MOTORS CORP.
  15. Disconnect the following electrical connectors:
    • Input speed sensor (1)
    • Output speed sensor (3)
    • Park/neutral position (PNP) switch (5)
    • Transmission (4)
  16. Disconnect the oxygen sensor (HO2S) electrical connector.
  17. Disconnect the wire harness clip (2) from the bracket on the left side of the transmission.
  18. Cut the tie strap to separate the vent hose from the wiring harness.
    19. Fig 7: Removing The Flywheel Inspection Cover
    GM394458Courtesy of GENERAL MOTORS CORP.
  19. Remove the flywheel inspection cover.
  20. Mark the torque converter to flywheel orientation.
  21. Remove the torque converter bolts.
    22. Fig 8: Exhaust Pipe Hanger Bracket (6.0L, 4L80-E Automatic Transmission)
    GM665092Courtesy of GENERAL MOTORS CORP.
  22. If equipped with a 6.0L engine, remove the exhaust hanger mounting bracket bolts and bracket.
    23. Fig 9: Exhaust Pipe Hanger Bracket And Bolts (6.0L, 6.6L, and 8.1L Engines, 4L80-E Automatic Transmission)
    GM665094Courtesy of GENERAL MOTORS CORP.
  23. If equipped with a 6.0L or 8.1L engine, remove the exhaust hanger mounting bracket bolts and bracket.
    24. Fig 10: View Of Transmission Oil Cooler Lines
    GM396804Courtesy of GENERAL MOTORS CORP.
  24. Disconnect the transmission oil cooler lines. Refer to Transmission Fluid Cooler Line Quick Connect Fitting .
  25. Plug the transmission oil cooler line fittings.
    26. Fig 11: Left Side Transmission Stud
    GM859378Courtesy of GENERAL MOTORS CORP.
  26. Remove the stud on the left side of the transmission.
    27. Fig 12: View Of Automatic Transmission Bolt/Studs (4.8L, 5.3L, and 6.0L Engines)
    GM859003Courtesy of GENERAL MOTORS CORP.
  27. Remove the remaining transmission studs.
  28. Install the J 21366  onto the transmission bell housing to retain the torque converter. See Special Tools .
  29. Pull the transmission straight back.
  30. Remove the transmission from the vehicle.
  31. Flush the transmission oil cooler and lines at this time. Refer to Automatic Transmission Oil Cooler Flushing and Flow Test (J 35944-A) or Automatic Transmission Oil Cooler Flushing and Flow Test (J 45096) .
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