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Removal (4L60-E)

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  1. Disconnect the battery negative (-) cable assembly from the battery negative terminal.
  2. Raise the vehicle.
  3. Support the vehicle with safety stands.
  4. Disconnect the range selector cable from the transmission bracket and from the range selector lever. See Fig 1 .
    Fig 1: Locating Range Selector Cable
    G00089899Courtesy of GENERAL MOTORS CORP.
  5. If equipped with All Wheel Drive (AWD), remove the transfer case. See appropriate REMOVAL & INSTALLATION article in TRANSFER CASES.
  6. Remove the rear drive shaft. See appropriate DRIVE SHAFTS & UNIVERSAL JOINTS article in DRIVELINE/AXLES.
  7. Support the transmission with a transmission jack.
  8. Remove the transmission support. See TRANSMISSION SUPPORT  .
  9. Remove the exhaust pipe from the exhaust manifolds and the muffler assembly from the exhaust pipe.
  10. Remove the starter motor. See appropriate STARTERS article in ELECTRICAL.
  11. Remove the converter sight shield. See Fig 2 .
    Fig 2: Identifying Converter Sight Shield
    G00191891Courtesy of GENERAL MOTORS CORP.
  12. Mark the flywheel and the torque converter alignment.
    13. NOTE: On models equipped with 4.3L engine, remove the starter opening shield in the starter motor mounting port in order to access the torque converter to engine flywheel bolts.
    Fig 3: Removing/Installing Torque Converter-To-Flywheel Bolts (4L60-E)
    G00207873Courtesy of GENERAL MOTORS CORP.
  13. Remove the bolts that attach the torque converter to the engine flywheel. See Fig 3 .
  14. Remove the transmission vent hose and the wiring harness from the transmission.
  15. Remove the transmission fluid fill tube and the fill tube seal from the transmission. See FILLER TUBE under REMOVAL & INSTALLATION in appropriate SERVICING article.
  16. Plug the fluid fill tube opening in the transmission.
  17. Disconnect the transmission oil cooler pipes from the transmission.
  18. Plug the transmission oil cooler pipe connectors in the transmission case.
  19. Disconnect the wiring harness connectors from the transmission Vehicle Speed Sensor (VSS) and the Park/Neutral Position (PNP) switch. See Fig 4 .
    Fig 4: Disconnecting/Connecting Wiring Harness Connectors
    G00207874Courtesy of GENERAL MOTORS CORP.
  20. Remove all vehicle harness wires, harness clips, tubes, brackets, and lines that may interfere with the removal of the transmission from the vehicle.
  21. Remove the studs and the bolts securing the transmission to the engine. See Fig 5 .
    Fig 5: Removing/Installing Transmission-To-Engine Studs & Bolts (4L60-E)
    G00207875Courtesy of GENERAL MOTORS CORP.
  22. Pull the transmission straight back.
  23. Remove the transmission from the vehicle.
  24. Inspect all the components for wear and damage.
  25. Inspect all the seals and the fittings for signs of wear.
  26. Inspect the torque converter for stripped or broken weld nuts.
  27. Inspect the transmission case for cracks.
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