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Removal - 8HP70: Removal

WARNING: This page is about a different car, the 2021 Chrysler 300. However, it is still accessible from the selected car via links, so may be relevant.
CAUTION:

The Transmission Control Module (TCM), or Transmission Control Module Assembly (TCMA) is extremely sensitive to Electrostatic Discharge (ESD). Always use a ground strap and follow the ESD guidelines in ELECTROSTATIC DISCHARGE SENSITIVE DEVICES. Failure to follow these instructions may result in damage to the TCM/TCMA.

  1. Raise and support the vehicle. Refer to HOISTING, STANDARD PROCEDURE .
  2. Drain the transmission fluid. Refer to FLUID AND FILTER, STANDARD PROCEDURE .
    GC0152193Courtesy of CHRYSLER GROUP, LLC
  3. Turn the locking mechanism lock (1) of the transmission wire harness connector counter-clockwise and disconnect the wire harness connector from the transmission.
    GC0152099Courtesy of CHRYSLER GROUP, LLC
    NOTE:

    Inspect the gasket for reuse. If the gasket seal is cut or torn, replace the gasket.

  4. Remove the transmission oil pan bolts (2).
  5. Carefully detach the oil pan (1) and gasket.
    GC0190550Courtesy of CHRYSLER GROUP, LLC
  6. Disconnect the Manual Park Release (MPR) cable (1) from the MPR lever (2).
    GC0152243Courtesy of CHRYSLER GROUP, LLC
  7. Remove the MPR lever retaining nut (2) and remove the lever (1).
    GC0152275Courtesy of CHRYSLER GROUP, LLC
  8. Reinstall the MPR lever (2) 180 degrees offset. Using a tie strap (3), secure the lever into position so the park release fork remains in the same position for installation of the valve body assembly.
    GC0154626Courtesy of CHRYSLER GROUP, LLC
  9. If equipped, disconnect the Hydraulic Impulse Oil Storage (HIS) wire harness connector.
  10. If equipped, remove HIS bolts (2 and 3) and the accumulator (1).
    GC0152103Courtesy of CHRYSLER GROUP, LLC
  11. Remove the valve body assembly end retainer bolts (3).
  12. Lift the wire harness connector lock (2) to release the internal wire harness end from inside the transmission for valve body assembly removal.
  13. Remove the Output Speed Sensor (OSS) retaining bolt (1) and pull the OSS sensor (4) loose from the case.
    GC0152117Courtesy of CHRYSLER GROUP, LLC
  14. Using (special tool #10377, Remover/Installer, Guide Sleeve) (1) carefully pull the wire harness insulator (2) straight out from the transmission case (3).
    GC0190541Courtesy of CHRYSLER GROUP, LLC
  15. Remove the bolts and install by hand the (special tool #10379, Pins, Valve Body Alignment) (1).
  16. Use an appropriate tool on one of the alignment pins (1) to assist in holding the valve body in position while removing the remaining fasteners.
    GC0169780Courtesy of CHRYSLER GROUP, LLC
  17. Remove the remaining valve body bolts.
  18. Carefully lower the valve body assembly from the transmission.
    GC0152241Courtesy of CHRYSLER GROUP, LLC
    NOTE:

    The fluid port may remain in the valve body upon removal, remove and discard the O-rings.

  19. Remove the fluid transfer port (1) from the transmission.
  20. Remove and DISCARD  the O-ring (2) and seal (3).
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