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Home >> Buick >> 2015 >> Regal GS, AWD >> Repair and Diagnosis >> Transmission >> Automatic Trans >> Automatic Transmission - 6T70 - Repair Instructions - On Vehicle >> Repair Instructions - On Vehicle >> Transmission Replacement (AWD) >> Removal Procedure

Removal Procedure

  1. Remove the battery tray. Refer to Battery Tray Replacement .
  2. Remove the transmission range select lever cable and bracket.
  3. Drain the transmission fluid. Refer to Transmission Fluid Drain and Fill .
    4. Fig 1: Identifying Wire Harness Retainer & TCM Electrical Connector
    GM1831034Courtesy of GENERAL MOTORS COMPANY
  4. Remove the wire harness retainer (2) from the control valve body cover stud.
  5. Disconnect the control valve body transmission control module (TCM) electrical connector (1).
    6. Fig 2: Identifying Transmission Fluid Cooler Inlet Hose Components
    GM1809052Courtesy of GENERAL MOTORS COMPANY
  6. Remove the transmission fluid cooler pipe retainer nut (1).
  7. Remove the transmission fluid cooler inlet hose and seal (2) from the transmission.
  8. Plug and/or cap the hose and transmission to prevent contamination.
    9. Fig 3: Identifying Transmission Fluid Cooler Pipe Components
    GM1809053Courtesy of GENERAL MOTORS COMPANY
  9. Remove the transmission fluid cooler pipe retainer nut (1).
  10. Remove the transmission fluid cooler outlet hose and seal (2) from the transmission.
  11. Plug and/or cap the hose and transmission to prevent contamination.
  12. Disconnect both pipes from the retainer.
  13. Install the engine support fixture. Refer to Engine Support Fixture .
  14. Remove the rear transmission mount from the transmission. Refer to Transmission Rear Mount Replacement (FWD) .
  15. Remove the front transmission mount from the transmission. Refer to Transmission Front Mount Replacement .
  16. Remove the left transmission mount from the transmission. Refer to Transmission Mount Replacement - Left Side .
    17. Fig 4: Upper Transmission To Engine Bolts
    GM3684522Courtesy of GENERAL MOTORS COMPANY
    NOTE:

    Fastener 2, depending on application, may be a nut and stud or a bolt.

  17. Remove the upper transmission to engine bolts (1,2,3).
  18. Remove the frame. Refer to Drivetrain and Front Suspension Frame Replacement .
  19. Disconnect the left wheel drive shaft from the transmission. Refer to Front Wheel Drive Shaft Replacement (GNB/GNA) .
  20. Disconnect the right wheel drive shaft from the transmission. Refer to Front Wheel Drive Shaft Replacement - Right Side .
  21. Remove the transfer case. Refer to Transfer Case Replacement .
  22. Remove the starter. Refer to Starter Replacement (LEA, LUK) .
  23. Mark the relationship of the flywheel to the torque converter for reassembly.
    24. Fig 5: Torque Converter To Flywheel Bolt
    GM3684741Courtesy of GENERAL MOTORS COMPANY
  24. Remove the four torque converter to flywheel bolts (1).
  25. Use a transmission jack in order to support the transmission.
    26. Fig 6: Rear Transmission Bolts
    GM3684570Courtesy of GENERAL MOTORS COMPANY
  26. Remove the rear transmission bolts (1).
  27. Remove the catalytic converter from the engine. Refer to Catalytic Converter Replacement (LUK, LEA) .
    28. Fig 7: Front Transmission Bolts
    GM3684619Courtesy of GENERAL MOTORS COMPANY
  28. Remove the front transmission bolts (1).
    29. NOTE:

    Ensure the torque converter remains securely in place on the transmission input shaft while separating and removing the transmission.

  29. Separate the transmission from the engine.
  30. Lower the transmission with the transmission jack far enough to remove the transmission.
  31. Flush and flow test the transmission oil cooler and lines. Refer to Transmission Fluid Cooler Flushing and Flow Test (6T30) .
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