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HOMESERVICE MANUALSCHEVROLET2001SUBURBAN C1500REPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT VARIANT/TRIMSECTION 2 (AUTOMATIC TRANSMISSION - 4L80-E - SERVICE, REPAIR AND DIAGNOSTICS)REPAIR INSTRUCTIONSCONTROL VALVE BODY REPLACEMENTCONTROL VALVE BODY ASSEMBLE
2001 Chevrolet Suburban C1500

Control Valve Body Assemble

2001 Chevrolet Suburban C1500SECTION Control Valve Body Assemble
WARNING: This page is about a different variant/trim than selected.
    Fig 1: 3rd-Reverse Ball Valve
    GM476320Courtesy of GENERAL MOTORS COMPANY
  1. Install the 3-4 shift valve spring (1).
  2. Install the 3-4 shift valve (2).
  3. Install the 3rd ball valve bushing (4) and 3rd ball valve bushing seal (3).
  4. Install the 3rd-reverse ball valve (5).
  5. Install the reverse ball valve bushing (6).
  6. Install the 3rd-reverse ball valve seat pin (7).
    7. Fig 2: 2-3 Shift Solenoid Valve
    GM476319Courtesy of GENERAL MOTORS COMPANY
  7. Install the 2-3 shift valve spring (1).
  8. Install the 2-3 shift valve (2).
  9. Install the 2-3 shift valve pin (4).
  10. Install the 2-3 shift solenoid valve (3).
  11. Refer to Fastener Notice in Cautions and Notices

    Install the 2-3 shift solenoid valve bolt (5).

    Tighten 

    Tighten the bolt to 8 N.m (71 lb in).

    12. Fig 3: 1-2 Shift Solenoid Valve
    GM476318Courtesy of GENERAL MOTORS COMPANY
  12. Install the 1-2 shift valve spring (1).
  13. Install the 1-2 shift valve (2).
  14. Install the 1-2 shift valve pin (3).
  15. Install the 1-2 shift solenoid valve (4).
  16. Install the 1-2 shift solenoid valve bolt (5).

    Tighten 

    Tighten the bolt to 8 N.m (71 lb ft).

    17. Fig 4: Shift Valve Fluid Filter Bore Plug
    GM476317Courtesy of GENERAL MOTORS COMPANY
  17. Install the shift solenoid valve fluid filter (1).
  18. Install the shift valve fluid filter bore plug (2).
  19. Install the shift valve fluid filter bore plug pin (3).
    20. Fig 5: Low-Reverse Ball Valve Seat
    GM476316Courtesy of GENERAL MOTORS COMPANY
  20. Install the low-reverse ball valve (1).
  21. Install the low-reverse ball valve seat (2).
  22. Install the low-reverse ball valve seat pin (3).
    23. Fig 6: Pressure Control Solenoid Valve Fluid Filter
    GM476315Courtesy of GENERAL MOTORS COMPANY
  23. Install the pressure control solenoid valve fluid filter (1).
    24. Fig 7: Accumulator Valve Bore Plug
    GM476314Courtesy of GENERAL MOTORS COMPANY
  24. Install the accumulator valve (4).
  25. Install the accumulator valve spring (3).
  26. Install the accumulator valve bore plug (2).
  27. Install the accumulator valve bore plug retainer pin (1).
    28. Fig 8: Actuator Feed Limit Valve Spring
    GM476312Courtesy of GENERAL MOTORS COMPANY
  28. Install the actuator feed limit valve (3).
  29. Install the actuator feed limit valve spring (2).
  30. Install the actuator feed limit valve spring retainer (1).
    31. Fig 9: TCC PWM Solenoid
    GM476310Courtesy of GENERAL MOTORS COMPANY
  31. Install the TCC regulator apply valve spring (3).
  32. Install the TCC regulator apply valve (2).
  33. Install the TCC regulator apply valve pin (4).
  34. Install the TCC PWM solenoid valve (1).
  35. Install the TCC PWM solenoid valve retainer (5).
    36. Fig 10: Pressure Control Solenoid
    GM476307Courtesy of GENERAL MOTORS COMPANY
  36. Install the pressure control solenoid valve (1) with the electrical connector facing away from the control valve body.
  37. Install the pressure control solenoid clamp (2).
  38. Install the pressure control solenoid clamp bolt (3).

    Tighten 

    Tighten the bolt to 8 N.m (71 lb in).

RENDER: 1.0x

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.