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Home >> Chevrolet >> 2004 >> Avalanche 2500 >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 9 (Automatic Transmission - 4L60-E/4L65-E (Introduction, Service & Replacement)) >> Repair Instructions >> Torque Converter Clutch Pulse Width Modulation (TCC PWM) Solenoid, TCC Solenoid, and Wiring Harness >> Installation Procedure

Installation Procedure

WARNING: This page is about a different variant/trim than selected.
    Fig 1: View Of TCC Solenoid & Wiring Harness
    GM71463Courtesy of GENERAL MOTORS CORP.
  1. Install the wiring harness and TCC solenoid with a new O-ring seal to the transmission.
  2. Install the pass-through electrical connector to the transmission case.
    3. Fig 2: View Of TCC Solenoid Bolts & Valve Body Bolts
    GM298139Courtesy of GENERAL MOTORS CORP.
    NOTE: Refer to Fastener Notice in Cautions and Notices.
  3. Install the valve body bolts which retain the internal wiring harness and install the TCC solenoid bolts.

    Tighten: 

    • Tighten the control valve body bolts to 11 N.m (97 lb in).
    • Tighten the TCC solenoid bolts to 11 N.m (97 lb in).

    4. Fig 3: View Of Pressure Control Solenoid & Components
    GM1239566Courtesy of GENERAL MOTORS CORP.
    IMPORTANT: When installing the pressure control solenoid, the electrical connector (2) must be in the position shown.
  4. Install the pressure control solenoid (377).
  5. Install the pressure control solenoid retainer (378) and retainer bolt (364A).

    Tighten:  Tighten the bolt to 11 N.m (97 lb in).

    6. Fig 4: View Of TCC PWM Solenoid & Retainer
    GM298154Courtesy of GENERAL MOTORS CORP.
  6. Install the TCC PWM solenoid to the control valve body.
  7. Install the TCC PWM solenoid retainer.
    8. Fig 5: Identifying Valve Body Electrical Connections
    GM181573Courtesy of GENERAL MOTORS CORP.
  8. Connect the internal wiring harness electrical connectors to 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)
  9. Install the 1-2 accumulator. Refer to Accumulator Assembly, Spacer Plate, and Gaskets .
    10. Fig 6: View Of Transmission Harness 20-Way Connector & VSS Electrical Connector
    GM858994Courtesy of GENERAL MOTORS CORP.
  10. Connect the transmission harness 20-way connector (1) to the transmission pass-through connector.

    Align the arrows on each half of the connector and insert straight down.

  11. Install the transmission filter. Refer to Automatic Transmission Fluid/Filter Replacement .
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