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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 >> Installation Procedure

Installation 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. Install the wiring harness and TCC solenoid assembly with a new O-ring seal to the transmission.
  2. Install the pass-through electrical connector to the transmission case.
    Fig 1: Installing Wiring Harness & TCC Solenoid Assembly
    G02424216Courtesy of GENERAL MOTORS CORP.
    CAUTION: Refer to FASTENER NOTICE .
  3. Install the valve body bolts which retain the internal wiring harness and install the TCC solenoid retaining bolts.

    Tighten 

    • Tighten the control valve body retaining bolts to 11 N.m (97 lb in).
    • Tighten the TCC solenoid retaining bolts to 11 N.m (97 lb in).
    Fig 2: Installing Valve Body Bolts & TCC Solenoid Retaining Bolts
    G02424217Courtesy of GENERAL MOTORS CORP.
  4. Install the pressure control solenoid.

    Ensure that the electrical tabs are facing outboard.

  5. Install the pressure control solenoid retainer and retaining bolt.

    Tighten 

    Tighten the pressure control solenoid retaining bolt to 11 N.m (97 lb in).

    Fig 3: Installing Pressure Control Solenoid, Retainer & Bolt
    G02424218Courtesy of GENERAL MOTORS CORP.
  6. Install the TCC PWM solenoid to the control valve body.
  7. Install the TCC PWM solenoid retainer.
    Fig 4: Installing TCC PWM Solenoid & Retainer
    G02424219Courtesy 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 .
    Fig 5: Connecting Internal Wiring Harness Electrical Connectors
    G02424220Courtesy of GENERAL MOTORS CORP.
  10. Connect the transmission harness 20-way connector to the transmission pass-through connector.

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

  11. Install the transmission oil pan and filter. Refer to Automatic Transmission Fluid/Filter Replacement .
  12. Lower the vehicle.
  13. Fill the transmission to the proper level with DEXRON® III transmission fluid. Refer to Transmission Fluid Checking Procedure .
    Fig 6: Connecting Transmission Harness 20-Way Connector
    G02424221Courtesy of GENERAL MOTORS CORP.
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