LEMON Manuals: Even more car manuals for everyone
Home >> GMC >> 2006 >> Sierra 1500 HD, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 236 (Automatic Transmission - 4L60-E/4L65-E (Service & Replacement)) >> Repair Instructions >> Torque Converter Clutch Pulse Width Modulation (TCC PWM) Solenoid, TCC Solenoid, and Wiring Harness >> Removal Procedure

Removal Procedure

WARNING: This page is about a different car, the 2003 GMC Savana and 2003 Chevrolet Chevy Express. However, it is still accessible from the selected car via links, so may be relevant.
  1. Raise and support the vehicle.
  2. Remove the transmission oil pan and the filter. Refer to Automatic Transmission Fluid/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.

    Fig 1: Disconnecting Transmission Harness 20-Way Connector
    G02424209Courtesy of GENERAL MOTORS CORP.

    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:
    • Transmission fluid pressure switch (1)
    • 1-2 shift control solenoid (2)
    • 2-3 shift control solenoid (3)
    • Pressure control solenoid (4)
    • TCC PWM solenoid (5)
    • 3-2 control solenoid (6)
    Fig 2: Disconnecting Internal Wiring Harness Electrical Connectors
    G02424210Courtesy of GENERAL MOTORS CORP.
  6. Remove the TCC PWM solenoid retainer.
  7. Remove the TCC PWM solenoid in order to access one of the TCC solenoid retaining bolts.
    Fig 3: Removing TCC PWM Solenoid Retainer & Solenoid
    G02424211Courtesy of GENERAL MOTORS CORP.
  8. Remove the pressure control solenoid retainer.
  9. Remove the pressure control solenoid.
    Fig 4: Removing Pressure Control Solenoid Retainer & Solenoid
    G02424212Courtesy of GENERAL MOTORS CORP.
  10. Remove the TCC solenoid retaining bolts and the valve body bolts which retain the internal wiring harness.
    Fig 5: Removing TCC Solenoid Retaining Bolts & Valve Body Bolts
    G02424213Courtesy of GENERAL MOTORS CORP.
  11. Using J 28458  , release the pass-through electrical connector from the transmission case.
    1. Use the small end of the J 28458  over the top of the connector.
    2. Twist in order to release the four tabs retaining the connector.
    3. Pull the harness connector down through the transmission case.
  12. Remove the TCC solenoid (with O-ring seal) and wiring harness assembly from the transmission case.
    Fig 6: Removing TCC Solenoid & Wiring Harness Assembly
    G02424214Courtesy of GENERAL MOTORS CORP.
  13. Inspect the TCC solenoid and wiring harness assembly for the following defects:
    • Damage
    • Cracked connectors
    • Exposed wires
    • Loose pins
    Fig 7: Inspecting TCC Solenoid & Wiring Harness Assembly
    G02424215Courtesy of GENERAL MOTORS CORP.
scientia non olet · About LEMON Manuals