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Home >> GMC >> 2003 >> Safari Van Cargo, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1360 (Automatic Transmission - 4L60-E - Service, Removal & Installation) >> 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 Sierra and 2003 Chevrolet Silverado. However, it is still accessible from the selected car via links, so may be relevant.
  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.
    Fig 1: Installing Wiring Harness & TCC Solenoid
    G01953635Courtesy of GENERAL MOTORS CORP.
    NOTE: Refer to FASTENER NOTICE .
  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).
      Fig 2: Installing Valve Body Bolts & TCC Solenoid Bolts
      G01953636Courtesy 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 bolt.

    Tighten 

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

    Fig 3: Installing Pressure Control Solenoid, Retainer & Bolt
    G01953637Courtesy 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
    G01953638Courtesy 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
    G01953639Courtesy 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   . 
    Fig 6: Connecting Transmission Harness 20-Way Connector
    G01953640Courtesy of GENERAL MOTORS CORP.
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