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Home >> Hummer >> 2008 >> H2 4D Utility Wagon >> Repair and Diagnosis >> External Pages >> Different car >> Section 134 (Automatic Transmission - 6L50/6L80/6L90 - Introduction (2 Of 2)) >> Repair Instructions >> Repair Instructions - On Vehicle >> Transmission Replacement >> Removal Procedure

Removal Procedure

WARNING: This page is about a different car, the 2007 GMC Yukon XL, 2007 GMC Yukon, 2007 Cadillac Escalade EXT, 2007 Cadillac Escalade ESV, and 2007 Cadillac Escalade. 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 .
  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 .
  4. Support the transmission with a transmission jack.
  5. Remove the transmission crossmember. Refer to Crossmember Replacement - Transmission (C1500 Series) or Crossmember Replacement - Transmission (C2500 Series) or Crossmember Replacement - Transmission (K1500 Series) or Crossmember Replacement - Transmission (K2500 series) .
  6. Remove the transmission mount. Refer to Transmission Mount Replacement (2WD) or Transmission Mount Replacement (4WD) .
  7. Remove the catalytic converter pipe. Refer to Catalytic Converter Replacement (1500 Series) .
  8. If the vehicle is equipped with a transfer case, remove the front propeller shaft. Refer to Front Propeller Shaft Replacement .
    9. Fig 1: Identifying Torque Converter Access Plug
    GM408374Courtesy of GENERAL MOTORS CORP.
  9. Remove the torque converter access plug.
    10. Fig 2: View Of Left Flywheel Inspection Cover
    GM1708215Courtesy of GENERAL MOTORS CORP.
  10. Remove the left flywheel inspection cover.
  11. Remove the starter motor. Refer to Starter Motor Replacement .
    12. Fig 3: View Of Right Flywheel Inspection Cover
    GM1705430Courtesy of GENERAL MOTORS CORP.
  12. Remove the right flywheel inspection cover.
    13. Fig 4: View Of Flywheel To Torque Converter Bolts
    GM1708265Courtesy of GENERAL MOTORS CORP.
  13. Remove the flywheel to torque converter bolts.
  14. Lower the transmission to gain access to the top and sides of the transmission.
    15. Fig 5: View Of Transfer Case Vent Tube Hose
    GM1708319Courtesy of GENERAL MOTORS CORP.
  15. Disconnect the vent tube hose and the electrical connections from the transfer case, if equipped.
  16. Remove the transfer case, if equipped. Refer to the appropriate procedure:
    17. Fig 6: View Of Transmission Heat Shield & Bolts
    GM1708338Courtesy of GENERAL MOTORS CORP.
  17. Remove the 2 bolts securing the heat shield to the transmission.
  18. Remove the transmission heat shield.
    19. Fig 7: View Of Range Selector Cable & Cable Bracket Retainer
    GM1707190Courtesy of GENERAL MOTORS CORP.
  19. Remove the range selector cable retaining clip (1) from the transmission range selector cable.
  20. Remove the range selector cable (2) from the range selector lever ball stud and the range selector cable bracket.
    21. Fig 8: View Of Transmission Vent Hose
    GM1705102Courtesy of GENERAL MOTORS CORP.
  21. Disconnect the transmission vent hose.
  22. Disconnect the transmission electrical connector from the transmission.
  23. Remove the wire harness from the transmission.
    24. Fig 9: View Of Bolt Securing Fuel Line Bracket To Left Side Of Transmission
    GM396800Courtesy of GENERAL MOTORS CORP.
  24. Remove the bolt that secures the fuel line bracket to the left side of the transmission.
    25. Fig 10: View Of Oil Cooling Lines & Bolt
    GM1705099Courtesy of GENERAL MOTORS CORP.
  25. Disconnect the transmission oil cooler lines from the transmission. Refer to Transmission Fluid Cooler Hose/Pipe Replacement .
  26. Plug the transmission oil cooler line connectors in the transmission case.
    27. Fig 11: View Of Transmission Bolts
    GM1708536Courtesy of GENERAL MOTORS CORP.
  27. Remove the 8 bolts securing the transmission to the engine.
  28. Pull the transmission straight back.
  29. Install the J 21366  onto the transmission bell housing to retain the torque converter.
  30. Remove the transmission from the vehicle while simultaneously removing the fluid level indicator tube.
  31. Flush the transmission oil cooler and cooling lines if necessary. Refer to Automatic Transmission Oil Cooler Flushing and Flow Test (J 45096) or Automatic Transmission Oil Cooler Flushing and Flow Test (J 35944-A) .
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