Sierra 1500 2WD V8-5.3L (2008)
Torque Converter Clutch Solenoid: Service and Repair
Torque Converter Clutch Pulse Width Modulation Solenoid, Torque Converter Clutch Solenoid, and Wiring Harness
Tools Required
J 28458 Seal Protector Retainer Installer
Removal Procedure
1. Remove the transmission filter. Refer to Automatic Transmission Fluid and Filter Replacement (See: Automatic Transmission/Transaxle/Service
and Repair/Removal and Replacement) .
2. Disconnect the transmission harness 20-way connector (1) from the transmission internal harness pass-through connector.
Depress both tabs on the connector and pull straight up; do not pry the connector.
Important: Removal of the valve body is not necessary for the following procedure.
3. Remove the 1-2 accumulator. Do not remove the spacer plate. Refer to Accumulator Assembly, Spacer Plate, and Gaskets (See: Automatic
Transmission/Transaxle/Accumulator/Service and Repair) .
4. Disconnect the internal wiring harness electrical connectors from the following components:
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Transmission fluid pressure switch (1)
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1-2 shift control solenoid (2)
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2-3 shift control solenoid (3)
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Pressure control solenoid (4)
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Torque converter clutch pulse width modulation (TCC PWM) solenoid (5)
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3-2 control solenoid (6)