LEMON Manuals: Even more car manuals for everyone
Home >> GMC >> 2006 >> Sierra 1500 HD, 4WD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 17 (Automatic Transmission - 4L60-E/4L65-E/4L70-E - Introduction (2 Of 2)) >> 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 variant/trim than selected.
  1. Remove the transmission filter. Refer to Automatic Transmission Fluid/Filter Replacement .
  2. Disconnect the transmission harness 20-way connector (1) from the transmission internal harness pass-through connector.
    Fig 1: View Of Transmission Harness 20-Way Connector & VSS Electrical Connector
    GM858994Courtesy of GENERAL MOTORS CORP.

    Depress both tabs on the connector and pull straight up; do not pry the connector.

    3. 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 .
    4. Fig 2: Identifying Valve Body Electrical Connections
    GM181573Courtesy of GENERAL MOTORS CORP.
  4. 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)
    • Torque converter clutch pulse width modulation (TCC PWM) solenoid (5)
    • 3-2 control solenoid (6)
  5. Remove the TCC PWM solenoid retainer.
    Fig 3: View Of TCC PWM Solenoid & Retainer
    GM298154Courtesy of GENERAL MOTORS CORP.
  6. Remove the TCC PWM solenoid in order to access one of the TCC solenoid bolts.
  7. Remove the pressure control solenoid retainer bolt (364A) and retainer (378).
    Fig 4: View Of Pressure Control Solenoid & Components
    GM1239566Courtesy of GENERAL MOTORS CORP.
  8. Remove the pressure control solenoid (377).
    9. Fig 5: View Of TCC Solenoid Bolts & Valve Body Bolts
    GM298139Courtesy of GENERAL MOTORS CORP.
  9. Remove the TCC solenoid bolts and the valve body bolts which retain the internal wiring harness.
  10. UsingJ 28458  , release the pass-through electrical connector from the transmission case. See Special Tools .
    1. Use the small end of the J 28458  over the top of the connector. See Special Tools .
    2. Twist in order to release the four tabs retaining the connector.
    3. Pull the harness connector down through the transmission case.
    11. Fig 6: View Of TCC Solenoid & Wiring Harness
    GM71463Courtesy of GENERAL MOTORS CORP.
  11. Remove the TCC solenoid (with O-ring seal) and wiring harness.
    12. Fig 7: View Of TCC Solenoid & Wiring Harness
    GM155017Courtesy of GENERAL MOTORS CORP.
  12. Inspect the TCC solenoid and wiring harness for the following defects:
    • Damage
    • Cracked connectors
    • Exposed wires
    • Loose pins
scientia non olet · About LEMON Manuals