Removal And Installation

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

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.

REMOVAL

Disconnect and isolate the negative battery cable(s). Refer to STANDARD PROCEDURE .
Drain the transmission fluid. Refer to appropriate service information .

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Disconnect the transmission wire harness connector (1) from the transmission by rotating the connector counter-clockwise.

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NOTE:
Inspect the gasket for reuse. If the seal is cut or torn, replace the gasket.
Remove the oil pan retaining bolts (1).
Remove the transmission fluid/filter pan assembly (2) and gasket.
Remove the Manual Park Release (MPR) lever retaining nut and remove the lever.
Reinstall the MPR lever 180 degrees offset. Using a tie strap, secure the lever into position so the park release fork remains in the same position for installation of the valve body assembly.

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If equipped, disconnect the Hydraulic Impulse Solenoid (HIS) wire harness connector (1).
If equipped, remove the HIS bolts (2) and remove the HIS accumulator.

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Remove the valve body assembly end retainer bolts (1, 2).
Lift the electrical connector lock (3) to release the internal harness end from inside the transmission for valve body assembly removal.

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Remove the Output Speed Sensor (OSS) retaining bolt (1) and pull the sensor loose from the case.

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Using the (special tool #10377, Remover/Installer, Guide Sleeve) (1), pull the electrical harness insulator (2) straight out from the transmission case.

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Remove the valve body assembly retaining bolts in the positions shown and hand install the (special tool #10379, Pins, Valve Body Alignment) (1).
Use an appropriate tool on one of the alignment pins, to assist in holding the valve body in position, while removing the remaining fasteners.

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Remove remaining valve body assembly retaining bolts in the order shown.
Carefully lower the valve body assembly from the transmission.

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NOTE:
The fluid port may remain in the valve body upon removal, remove and discard the O-rings.
Remove the fluid transfer port (1) from the transmission.
Remove and DISCARD the fluid transfer port O-rings.

INSTALLATION

CAUTION:

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Install the fluid port (1) with NEW O-rings to the valve body.

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Install the valve body assembly to the transmission using the previously installed (special tool #10379, Pins, Valve Body Alignment) (1) as a guide.
Use an appropriate tool on one of the alignment pins, to assist in holding the valve body in position, while installing the remaining fasteners.

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Install the valve body assembly retaining bolts 1-14 and hand tighten.
Remove the pins and install the remaining bolts.

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Using the (special tool #10377, Remover/Installer, Guide Sleeve) (1) carefully install the electrical harness insulator (2) to the transmission case.

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Push the wire harness connector lock (3) down to lock it to the internal wire harness connector end and install the valve body end retaining bolts (1, 2).

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When installing the OSS into the case, take care to position the OSS guide pin as shown below or DAMAGE to the sensor may result. This is the INCORRECT alignment of the pin.

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This is the CORRECT installation and pin alignment.

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Install the OSS and install the OSS bolt (1) and tighten to the proper torque specifications. Refer to TORQUE SPECIFICATIONS .

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Tighten ALL of the valve body bolts, in the sequence shown in illustration, to the proper torque specifications. Refer to TORQUE SPECIFICATIONS .

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If equipped, install the HIS accumulator.
Tighten the HIS bolts (2) to the proper torque specifications. Refer to TORQUE SPECIFICATIONS .
Connect the HIS wire harness connector (1).

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Install the MPR cable end (1) on the MPR lever, install the MPR cable bracket bolts (2) and tighten to the proper torque specifications. Refer to TORQUE SPECIFICATIONS .

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Install the transmission fluid/filter pan assembly and gasket (2).

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NOTE:
If the transmission was contaminated or the gasket is damaged a NEW pan and filter assembly must be installed.
Install the transmission fluid/filter pan assembly bolts and tighten the transmission fluid/filter pan assembly bolts in the sequence shown to the proper torque specifications. Refer to TORQUE SPECIFICATIONS .

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Connect the transmission wire harness connector (1).
Turn the locking mechanism of the transmission wire harness connector clockwise to lock it in place.
Connect the negative battery cable(s). Refer to STANDARD PROCEDURE .
If the valve body is replaced, program the TCM. Refer to MODULE, TRANSMISSION CONTROL (TCM), MODULE PROGRAMMING .
Perform the TRANSMISSION FILL AFTER SERVICE procedure. Refer to TRANSMISSION FILL AFTER SERVICE .
Perform the TRANSMISSION VERIFICATION TEST. Refer to TRANSMISSION VERIFICATION TEST .