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Home >> Cadillac >> 2017 >> XTS Base >> Repair and Diagnosis >> Transmission >> Automatic Trans >> Automatic Transmission - 6T70 (M7U M7W), 6T75 (M7V), Or 6T80 (Mhm) - Repair Instructions - On Vehicle >> Repair Instructions - On Vehicle >> Transmission Replacement (AWD with LF3 Engine) >> Removal Procedure

Removal Procedure

  1. Drain the transmission fluid. Transmission Fluid Drain and Fill 
  2. Remove the transfer case. Transfer Case Replacement (LF3 Engine)
    3. Fig 1: Identifying Wire Harness Retainer & TCM Electrical Connector
    GM1831034Courtesy of GENERAL MOTORS COMPANY
  3. Remove the wire harness retainer (2) from the control valve body cover stud.
  4. Disconnect the control valve body transmission control module (TCM) electrical connector (1).
  5. Remove the front transmission mount from the transmission. Transmission Front Mount Replacement 
  6. Disconnect electrical connectors as necessary.
    7. Fig 2: Identifying Upper Transmission To Engine Bolts
    GM1831026Courtesy of GENERAL MOTORS COMPANY
  7. Remove the upper transmission to engine bolts (1, 2).
  8. Remove the remaining transmission bolts (4).
    9. NOTE:

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

  9. Separate the transmission from the engine.
  10. Flush and flow test the transmission oil cooler and lines. Transmission Fluid Cooler Flow Test and Flushing
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