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8HP70 Automatic Transmission (Service Information): Removal

CAUTION:

The transmission and torque converter must be removed as an assembly to avoid component damage. The converter driveplate, oil pump, or oil seal can be damaged if the converter is left attached to the driveplate during removal. Be sure to remove the transmission and converter as an assembly.

NOTE:

If the transmission is being reconditioned (clutch/seal replacement) or replaced, it is necessary to perform the TCM Adaptation Procedure using the scan tool. Refer to 8HP70 TCM PROGRAMMING PROCEDURE

  1. Disconnect the battery negative cable.
  2. Raise and support the vehicle.
  3. Remove the rear section of exhaust

    For 5.7L Engines, Refer to 5.7L . For 6.4L Engines, Refer to 6.4L

  4. Remove the heat shield below rear prop shaft.
  5. If equipped, remove skid plates.
    GC0158366Courtesy of CHRYSLER GROUP, LLC
  6. Disconnect the Mechanical Park Release (MPR) cable (1) from the lever (2).
  7. Rotate the MPR lever (2) forward to engage neutral position and secure it with a suitable zip tie (3).
  8. Remove the rear propeller shaft

    Refer to SHAFT, DRIVE, REAR, REMOVAL .

    GC0158384Courtesy of CHRYSLER GROUP, LLC
  9. Support the transmission with a suitable jack.
    NOTE:

    Be careful not to damage to transmission pan.

    GC0158349Courtesy of CHRYSLER GROUP, LLC
  10. Remove the transmission mount nuts (2).
  11. Remove the cross-member bolts (1 and 3).
  12. Remove the cross-member.
  13. If 4WD, remove the front propeller shaft. Refer to REMOVAL
  14. If 4WD, remove the front propeller shaft heat shield.
  15. Remove the right and left side Catalytic converters. Refer to 5.7L/6.4L

  16. Remove the starter.For 5.7L Engines, Refer to 5.7L . For 6.4L Engines, Refer to 6.4L .
    GC0158334Courtesy of CHRYSLER GROUP, LLC
  17. Remove the transmission to engine structural cover.
    NOTE:

    The left front bolt (2) must be removed with the structural cover.

  18. Remove the transfer case. Refer to REMOVAL .
    GC0158361Courtesy of CHRYSLER GROUP, LLC
  19. Disconnect the 13-pin plug connector (1). Turn the connector counter-clockwise to release.
  20. Unclip all remaining wiring harness from the transmission.
    GC0158335Courtesy of CHRYSLER GROUP, LLC
  21. Remove the wiring harness bracket from the right side of the torque convertor housing.
    NOTE:

    Removing this bracket will gain clearance to the under body.

    GC0158322Courtesy of CHRYSLER GROUP, LLC
  22. Release the locking tab (1) from the MPR cable (2) and remove the cable from the bracket (3).
    GC0158317Courtesy of CHRYSLER GROUP, LLC
  23. Unclip the Jiffy Tite locking covers (1) and slide them back onto the transmission lines.
  24. Using (special tool #9546, Disconnect Tool)remove the trans cooler lines.
  25. Disconnect trans vent hose.
    GC0158324Courtesy of CHRYSLER GROUP, LLC
  26. Disconnect left front cooler line clip (1).
    GC0158383Courtesy of CHRYSLER GROUP, LLC
  27. Remove six torque converter bolts (1).
    NOTE:

    There are three sets 2 torque converter bolts located 120° apart from each other.

    GC0118998Courtesy of CHRYSLER GROUP, LLC
  28. Remove two engine to transmission bolts (3).
    NOTE:

    It may be necessary to support the rear of the engine during transmission removal.

  29. Remove remaining transmission to engine bolts (4).
    GC0082966Courtesy of CHRYSLER GROUP, LLC
  30. Carefully work transmission (2) and torque converter assembly rearward off the engine (1) block dowels.
    NOTE:

    Be careful not to damage or bend the transmission oil cooler lines.

  31. Hold torque converter in place during transmission removal.
  32. Lower transmission and remove assembly from under the vehicle.
  33. To remove the torque converter, carefully slide the torque converter out of the transmission.
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