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Home >> Isuzu >> 2004 >> Ascender S, 4WD >> Repair and Diagnosis >> Transmission >> Automatic Trans >> Automatic Transmission, 4L60-E/4L65-E (Introduction) >> Repair Instructions >> Control Valve Body Installation >> Procedure

Control Valve Body Installation: Procedure

    Fig 1: Inspecting Wiring Harness & Solenoid Assembly
    GM1220971Courtesy of GENERAL MOTORS CORP.
    IMPORTANT: Secondary fluid pump connector (1) is used for M33 models only.
  1. Inspect the wiring harness and solenoid assembly for the following conditions:
    • Damage
    • Cracked connectors
    • Exposed wires
    • Loose electrical terminals
    • Damaged wiring loom
    • Worn, missing, or cut pass-through connector O-ring seal.
  2. Install the transmission wiring harness pass-through connector into the transmission case. Ensure connector tabs lock into place.
  3. Move the harness to one side in order to install the valve body.
    4. Fig 2: Identifying Checkball Locations
    GM7741Courtesy of GENERAL MOTORS CORP.
    IMPORTANT: Valve bodies are model dependent.
  4. Install the checkballs (2-6, 8, 12) in the valve body and retain checkballs with J 36850 or an equivalent. Some models do not use a #5 checkball.
    5. Fig 3: Installing Valve Body
    GM7742Courtesy of GENERAL MOTORS CORP.
  5. Install the valve body over the J 25025-5  Guide Pins, and connect the manual valve link to the manual valve. See Special Tools and Equipment .
  6. Install two bolts to hold the valve body in place.
  7. Remove the J 25025-5  . See Special Tools and Equipment .
    8. Fig 4: Installing Fluid Level Indicator Stop Bracket & Indicated Valve Body Bolts
    GM880291Courtesy of GENERAL MOTORS CORP.
  8. Install the fluid level indicator stop bracket (93) if equipped and the valve body bolts (62) that are shown only.
  9. Finger tighten the bolts.
    10. Fig 5: Inspecting Transmission Fluid Pressure (TFP) Manual Valve Position Switch Assembly
    GM829178Courtesy of GENERAL MOTORS CORP.
  10. Inspect the Transmission Fluid Pressure (TFP) Manual Valve Position Switch Assembly for the following conditions:
    • Damage
    • Debris
    • Damaged or missing O-rings
    • Cracked connector
    • Loose electrical terminals
    • Poor terminal retention
    • Sediment in switch membrane
    11. Fig 6: Removing/Installing Transmission Fluid Pressure (TFP) Manual Valve Position Switch Assembly
    GM829171Courtesy of GENERAL MOTORS CORP.
  11. Install the TFP manual valve position switch (69) and bolts (62, 70).
    12. Fig 7: Removing/Installing TCC Solenoid
    GM880287Courtesy of GENERAL MOTORS CORP.
  12. Install the transmission wiring harness on the valve body.
    13. NOTE: Refer to Fastener Notice in Cautions and Notices.
  13. Install the TCC solenoid valve and bolts (68).

    Tighten:  Tighten the bolts to 8-14 N.m (6-10 ft. lb.).

    14. Fig 8: Checking That All Valve Body Bolts Are In Correct Location
    GM1220976Courtesy of GENERAL MOTORS CORP.
    NOTE: Do not over-tighten the bolts. Over-tightening the bolts will distort the valve bores. Begin tightening from the center of the valve body tighten the bolts in a outward direction.
  14. Check that all the valve body bolts are in the correct location.

    Each bolt number refers to a specific bolt size, as indicated by the following list:

    • 1 - M6 x 1.0 x 65.0
    • 2 - M6 x 1.0 x 54.4
    • 3 - M6 x 1.0 x 47.5
    • 4 - M6 x 1.0 x 17.7
    • 5 - M6 x 1.0 x 35.0
  15. Tighten the bolts from the center of the valve body working your way out in a spiral pattern to the outside edge.

    Tighten:  Tighten the bolts to 8-14N.m (6-10 ft. lb.).

    16. Fig 9: Removing/Installing Torque Converter Clutch (TCC/PWM) Pulse Width Modulation Solenoid
    GM405022Courtesy of GENERAL MOTORS CORP.
  16. Install the TCC PWM solenoid valve (396) and the solenoid retainer (395).
    17. Fig 10: Installing Wiring Harness In Correct Position
    GM880285Courtesy of GENERAL MOTORS CORP.
  17. Snap the wiring harness in place on the valve body bolts. Ensure the harness loom tab is located under the TFP switch.
  18. Install the wiring connectors to the electrical components as indicated by the following list:
    • 1 - Transmission Fluid Pressure (TFP) manual valve position switch
    • 2 - 1-2 Shift Solenoid
    • 3 - 2-3 Shift Solenoid
    • 4 - Pressure Control Solenoid (PCS)
    • 5 - Torque Converter Clutch Pulse Width Modulation (TCC PWM) Solenoid
    • 6 - 3-2 Shift Solenoid
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