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Home >> GMC >> 2003 >> Safari Van Cargo, AWD >> Repair and Diagnosis >> Transmission >> Automatic Trans >> 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

  1. Install the wiring harness and TCC solenoid assembly with a new O-ring seal to the transmission.
    Fig 1: Wiring Harness & TCC Solenoid Assembly
    G01565911Courtesy of GENERAL MOTORS CORP.
  2. Install the pass-through electrical connector to the transmission case.
    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 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: Valve Body Bolts
    G01565912Courtesy 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: Pressure Control Solenoid
    G01565913Courtesy 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 To Control Valve Body
    G01565914Courtesy 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)
    Fig 5: Connecting Internal Wiring Harness Electrical Connectors To Located Components
    G01565915Courtesy of GENERAL MOTORS CORP.
  9. Install the 1-2 accumulator. Refer to ACCUMULATOR ASSEMBLY, SPACER PLATE, AND GASKETS .
  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

    Fig 6: Connecting Transmission Harness 20-Way Connector To Transmission Pass-Through Connector
    G01565916Courtesy of GENERAL MOTORS CORP.
  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 .
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