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Home >> Isuzu >> 2007 >> Ascender RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 274 (Automatic Transmission - 4L60-E/4L65-E/4L70-E - Removal & Installation, Service, Overhaul, Troubleshooting & Diagnosis) >> Repair Instructions - On Vehicle >> Torque Converter Clutch Pulse Width Modulation Solenoid, Torque Converter Clutch Solenoid & Wiring Harness >> Installation Procedure

Installation Procedure

WARNING: This page is about a different car, the 2008 Isuzu Ascender, 2008 GMC Envoy, and 2008 Chevrolet TrailBlazer. However, it is still accessible from the selected car via links, so may be relevant.
    Fig 1: View Of TCC Solenoid & Wiring Harness
    GM71463Courtesy of GENERAL MOTORS CORP.
  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.
    3. Fig 2: View Of TCC Solenoid Bolts & Valve Body Bolts
    GM298139Courtesy 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 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).

    4. Fig 3: Locating Pressure Control Solenoid & Retainer
    GM298162Courtesy 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).

    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
    GM173661Courtesy 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 and Filter Replacement .
  12. Lower the vehicle.
  13. Fill the transmission to the proper level with DEXRON® VI transmission fluid. Refer to Transmission Fluid Check .
    14. IMPORTANT: It is recommended that transmission adaptive pressure (TAP) information be reset.
    Resetting the TAP values using a scan tool will erase all learned values in all cells. As a result, the engine control module (ECM), powertrain control module (PCM) or transmission control module (TCM) will need to relearn TAP values. Transmission performance may be affected as new TAP values are learned.
  14. Reset the TAP values. Refer to Transmission Adaptive Functions (TCM) .
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