Section 2 (8HP75 Automatic Transmission (Service Information)): Removal

WARNING: This page is about a different variant/trim than selected.

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 8HP45/845RE TCM PROGRAMMING PROCEDURE .

Disconnect the battery negative cable.
Raise and support the vehicle.
Remove the Selective Range Catalyst (SRC)
Refer to CATALYST, SELECTIVE CATALYTIC REDUCTION (SCR), REMOVAL .
Remove the heat shield below rear prop shaft.
If equipped, remove all skid plates and close out panels.

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Disconnect the Manual Park Release (MPR) cable (1) from the lever (2).
Rotate the MPR lever (2) forward to engage neutral position and secure it with a suitable zip tie (3).
Remove the rear propeller shaft
Refer to SHAFT, DRIVE, REAR, REMOVAL .

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Support the transmission with a suitable jack.
NOTE:
Be careful not to damage to transmission pan.

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Remove the transmission mount nuts (2).
Remove the crossmember bolts (1 and 3).
Remove the crossmember.
If 4WD, remove the front propeller shaft
Refer to SHAFT, DRIVE, REAR, REMOVAL .
If 4WD, remove the front propeller shaft heat shield.
Remove the starter
Refer to the appropriate service information STARTER, REMOVAL .
Remove the transfer case
Refer to REMOVAL .

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Disconnect the 13-pin plug connector (1). Turn the connector counter-clockwise to release.

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Remove the 13-pin connector bracket (2) from the transmission case and exhaust.
Unclip all remaining wiring harness from the transmission.

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Remove the Differential pressure sensor bracket (1) from the right side of the torque convertor housing.
NOTE:
Removing this bracket will gain clearance to the under body.

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Remove the exhaust bracket (1) from the convertor housing to the exhaust pipe.

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Release the locking tab (1) from the MPR cable (2) and remove the cable from the bracket (3).

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Unclip the Jiffy Tite locking covers (1) and slide them back onto the transmission lines.
Using (special tool #9546, Disconnect Tool)remove the trans cooler lines.
Disconnect trans vent hose.

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Disconnect left front cooler line clip (1).

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Remove the NVH cover (1) from the crankshaft damper.

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NOTE:
3.6L engine shown, diesel starter pocket similar.
Rotate crankshaft clockwise and remove six torque converter bolts (1) through the starter pocket.
NOTE:
There are three sets 2 torque converter bolts located 120° apart from each other.

NOTE:
If necessary, mark crankshaft pulley for torque converter bolt location every 120°

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Remove two engine to transmission bolts (3).
NOTE:
It may be necessary to support the rear of the engine during transmission removal.
Remove remaining transmission to engine bolts (4).

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