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Home >> GMC >> 2006 >> Sierra 1500 HD, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 236 (Automatic Transmission - 4L60-E/4L65-E (Service & Replacement)) >> Repair Instructions >> Transmission Replacement >> Removal Procedure

Removal Procedure

WARNING: This page is about a different car, the 2003 GMC Savana and 2003 Chevrolet Chevy Express. However, it is still accessible from the selected car via links, so may be relevant.
WARNING: Refer to BATTERY DISCONNECT CAUTION .
  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.
  5. If equipped with All Wheel Drive (AWD), remove the transfer case. Refer to TRANSFER CASE .
    Fig 1: Disconnecting Range Selector Cable
    G02424250Courtesy of GENERAL MOTORS CORP.
  6. Remove the rear propeller shaft. Refer to PROPELLER SHAFT REPLACEMENT - ONE PIECE or PROPELLER SHAFT REPLACEMENT - TWO PIECE .
  7. Support the transmission with a transmission jack.
  8. Remove the transmission support. Refer to TRANSMISSION SUPPORT REPLACEMENT .
  9. Remove the exhaust pipe from the exhaust manifolds and the muffler assembly from the exhaust pipe. Refer to CATALYTIC CONVERTER REPLACEMENT (4.3L) or CATALYTIC CONVERTER REPLACEMENT (DUAL EXHAUST - RIGHT) or CATALYTIC CONVERTER REPLACEMENT (DUAL EXHAUST - LEFT) .
  10. Remove the starter motor. Refer to STARTER MOTOR REPLACEMENT (4.8L, 5.3L & 6.0L) or STARTER MOTOR REPLACEMENT (4.3L) .
  11. Remove the converter sight shield.
  12. Mark the flywheel and the torque converter alignment.
    Fig 2: Removing Converter Sight Shield
    G02424251Courtesy of GENERAL MOTORS CORP.

    Important:  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.

  13. Remove the bolts that attach the torque converter to the engine flywheel.
    Fig 3: Removing Torque Converter To Engine Flywheel Bolts
    G02424252Courtesy of GENERAL MOTORS CORP.
  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. Refer to Filler Tube and Seal Replacement .
  16. Plug the fluid fill tube opening in the transmission.
  17. Disconnect the transmission oil cooler pipes from the transmission. Refer to Transmission Fluid Cooler Hose/Pipe Replacement .
  18. Plug the transmission oil cooler pipe connectors in the transmission case.
    Fig 4: Removing Transmission Vent Hose & Wiring Harness
    G02424253Courtesy of GENERAL MOTORS CORP.
  19. Disconnect the wiring harness connectors from the transmission vehicle speed sensor and the park/neutral position switch.
  20. Remove all vehicle harness wires, harness clips, tubes, brackets, and lines that may interfere with the removal of the transmission from the vehicle.
    Fig 5: Disconnecting Wiring Harness Connectors
    G02424254Courtesy of GENERAL MOTORS CORP.
  21. Remove the studs and the bolts securing the transmission to the engine.
  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.
    Fig 6: Removing Transmission Studs & Bolts
    G02424255Courtesy of GENERAL MOTORS CORP.
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