TrailBlazer 2WD V8-5.3L (2007)
Torque Converter: Service and Repair
Torque Converter Clutch Pulse Width Modulation Solenoid, Torque Converter Clutch Solenoid, and
Wiring Harness
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. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle.
2. Remove the transmission oil pan and the filter. Refer to Automatic Transmission Fluid and Filter Replacement.
3. Disconnect the transmission harness 20-way connector 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.
4. Remove the 1-2 accumulator assembly. Do not remove the spacer plate. Refer to Accumulator Assembly, Spacer Plate, and Gaskets.
5. 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 (TCC) pulse width modulation (PWM) solenoid (5)
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3-2 control solenoid (6)