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Home >> Cadillac >> 2018 >> Escalade Base, 4WD >> Repair and Diagnosis >> External Pages >> Different car >> Section 3 (Automatic Transmission - 6L80 (MYC) Or 6L90 (MYD) - Repair Instructions - On Vehicle) >> Repair Instructions - On Vehicle >> Transmission Replacement >> Removal Procedure

Removal Procedure

WARNING: This page is about a different car, the 2018 GMC Yukon XL, 2018 GMC Yukon, 2018 Chevrolet Tahoe, 2018 Chevrolet Suburban 3500 HD, and 2018 Chevrolet Suburban. However, it is still accessible from the selected car via links, so may be relevant.
  1. Disconnect the negative battery cable. Refer to Battery Negative Cable Disconnection and Connection (Dual Battery)Battery Negative Cable Disconnection and Connection (Single Battery) .
  2. Raise and suitably support the vehicle. Refer to Lifting and Jacking the Vehicle .
  3. Remove the rear propeller shaft. Refer to Rear Propeller Shaft Replacement (1500)Rear Propeller Shaft Replacement (Heavy Duty)Rear Propeller Shaft Replacement (M5U, 2WD) .
  4. If the vehicle is equipped with a transfer case, remove the front propeller shaft. Refer to Front Axle Propeller Shaft Replacement (NQH)Front Axle Propeller Shaft Replacement (Heavy Duty) .
    5. Fig 1: Torque Converter Access Plug
    GM408374Courtesy of GENERAL MOTORS COMPANY
  5. Remove the torque converter access plug.
    6. Fig 2: Left Flywheel Inspection Cover And Bolt
    GM1708215Courtesy of GENERAL MOTORS COMPANY
  6. Remove the left flywheel inspection cover.
  7. Remove the starter motor. Refer to Starter Replacement (L83, L86)Starter Replacement (L96) .
    8. Fig 3: Right Flywheel Inspection Cover And Bolt
    GM1705430Courtesy of GENERAL MOTORS COMPANY
  8. Remove the right flywheel inspection cover.
  9. Remove the steering gear skid shield. Refer to Steering Gear Skid Shield Replacement .
  10. Mark the relationship of the flywheel to the torque converter for reassembly.
    11. Fig 4: Flywheel To Torque Converter Bolts
    GM1708265Courtesy of GENERAL MOTORS COMPANY
  11. Remove the flywheel to torque converter bolts.
  12. Support the transmission with a transmission jack.
  13. Remove the transmission crossmember. Refer to Transmission Support Crossmember Replacement (2WD)Transmission Support Crossmember Replacement (4WD) .
  14. Remove the transmission mount. Refer to Transmission Mount Replacement (Two Wheel Drive) Transmission Mount Replacement (Four Wheel Drive) .
  15. Remove the catalytic converter pipe. Refer to Three-Way Catalytic Converter Replacement .
  16. Lower the transmission to gain access to the top and sides of the transmission.
  17. Remove the transfer case, if equipped. Refer to Transfer Case Assembly Replacement , for the MP 3010-NP0 transfer case or Transfer Case Assembly Replacement for the MP 3023/3024-NQH transfer case.
    18. Fig 5: Transmission Heat Shield And Bolts
    GM1708338Courtesy of GENERAL MOTORS COMPANY
  18. Remove the 2 bolts securing the heat shield to the transmission.
  19. Remove the transmission heat shield.
    20. Fig 6: Range Selector Cable And Retainer
    GM4249063Courtesy of GENERAL MOTORS COMPANY
    NOTE:

    DO NOT pry the cable end from the lever ball stud. Replacement of the range selector cable requires a NEW control lever.

  20. Remove the range selector cable (2) and the transmission range selector lever as an assembly.
  21. Remove the retainer (1) that secures the cable to the bracket.
    22. Fig 7: Transmission Wiring Harness And Retainers
    GM1705102Courtesy of GENERAL MOTORS COMPANY
  22. Disconnect the transmission vent hose.
  23. Disconnect the transmission electrical connector by pulling the white plastic tab, located on the connector circular ring (approximately 15 x 15 mm), outward and then rotate the circular ring of the connector counterclockwise. When the circular ring is disengaged, pull the connector straight out. Outward means away from transmission centerline, counterclockwise is looking at connector from rear of transmission.
  24. Remove the wire harness from the transmission.
    25. Fig 8: Bolt Securing Fuel Line Bracket To Left Side Of Transmission
    GM396800Courtesy of GENERAL MOTORS COMPANY
  25. Remove the bolt that secures the fuel line bracket to the left side of the transmission.
    26. Fig 9: Oil Cooling Lines And Bolt
    GM1705099Courtesy of GENERAL MOTORS COMPANY
  26. Disconnect the transmission oil cooler lines (1) from the transmission. Refer to Transmission Fluid Cooler Inlet and Outlet Pipe Replacement (L83 MYC) .
  27. Plug the transmission oil cooler line connectors in the transmission case.
  28. Remove the transmission dipstick tube retaining nut.
  29. Reposition the transmission dipstick tube.
  30. Remove the vent tube bracket retaining nut on the back of the transmission at the engine.
  31. Reposition the vent tube bracket.
  32. Remove the transmission cooler line bracket retaining nut and reposition.
  33. Remove the fuel line bracket nut on the back of the transmission at the engine and reposition the fuel line bracket.
  34. Secure the transmission to the jack using the appropriate strap.
    35. Fig 10: Transmission Mounting Bolts
    GM1708536Courtesy of GENERAL MOTORS COMPANY
  35. Remove the 8 bolts securing the transmission to the engine.
  36. Pull the transmission straight back.
  37. Install the J-21366  converter holding strap onto the transmission bell housing to retain the torque converter.
  38. Remove the transmission from the vehicle while simultaneously removing the fluid level indicator tube.
  39. Flush the transmission cooler lines. Refer to Transmission Fluid Cooler Flow Test and Flushing (6L80 or 6L90) .
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