LEMON Manuals: Even more car manuals for everyone
Home >> Chevrolet >> 2005 >> Chevy Express H1500, Van Passenger >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 5 (Automatic Transmission - 4L80-E/4L85-E - Introduction & Repair Instructions) >> Repair Instructions >> Valve Body and Pressure Switch Replacement >> Installation Procedure

Installation Procedure

WARNING: This page is about a different variant/trim than selected.
    Fig 1: Installing Checkballs
    GM237284Courtesy of GENERAL MOTORS CORP.
  1. Install the 8 checkballs (9 checkballs for some models) into the control valve body.
    • The checkball marked as number 2, is used on RCP, RDP, ZJP and ZLP models only
    • To hold the checkballs in place, use the J 36850  .
  2. Install the PWM screen into the control valve body.
    3. Fig 2: Manual 2-1 Band Servo Piston Assembly
    GM477871Courtesy of GENERAL MOTORS CORP.
  3. Install a new manual 2-1 band servo piston seal (2) onto the manual 2-1 band servo piston (3).
  4. Install the manual 2-1 band servo piston pin (1) into the manual 2-1 band servo piston (3).
  5. Install the manual 2-1 band servo piston pin retainer ring (4).
    6. Fig 3: Manual 2-1 Band Servo Piston & Cushion Spring
    GM477872Courtesy of GENERAL MOTORS CORP.
  6. Install the manual 2-1 band servo piston cushion spring (2).
    7. IMPORTANT: Make certain that the tapered end of the manual 2-1 band servo piston pin contacts the manual 2-1 band.
  7. Install the manual 2-1 band servo piston assembly (1).
    8. Fig 4: Manual Valve & Valve Body
    GM237271Courtesy of GENERAL MOTORS CORP.
  8. Install the manual valve (1) into the control valve body.
    9. Fig 5: Installing J 25025-5 To Aid In Alignment And Assembly
    GM237299Courtesy of GENERAL MOTORS CORP.
  9. To aid in alignment and assembly, install tool J 25025  .
  10. Install the control valve body gasket (6).
  11. Install the control valve body assembly (5). Attach the manual valve to the detent lever while installing the control valve body assembly.
    12. Fig 6: Installing The Transmission Fluid Pressure Manual Valve Position Switch
    GM237322Courtesy of GENERAL MOTORS CORP.
  12. Install the transmission fluid pressure manual valve position switch (2).
  13. Install the transmission fluid pressure manual valve position switch bolts (1) finger tight.
    14. Fig 7: Transmission Fluid Pressure Manual Valve Position Switch Bolt Tightening Sequence
    GM237341Courtesy of GENERAL MOTORS CORP.
  14. Tighten the bolts in the order shown to 11 N.m (97 lb in).
  15. Remove the J 25025  .
    16. Fig 8: Wiring Clips And Lube Oil Pipe
    GM237346Courtesy of GENERAL MOTORS CORP.
  16. Install the manual shaft detent roller and spring assembly (3) and bolts.
  17. Install the two wiring harness clips (1) and bolts (2).
  18. Install the wiring harness clip (1) and bolts (2).
  19. Install the lube oil pipe (5) with the short end into the control valve body.
  20. Install the lube oil pipe retainer (7) and the bolt (6).
    21. Fig 9: Valve Body Bolt Tightening Sequence
    GM54712Courtesy of GENERAL MOTORS CORP.
    NOTE: Refer to Fastener Notice in Cautions and Notices.
  21. Install the control valve body bolts.

    Tighten:  Tighten the bolts in the order shown to 11 N.m (97 lb in).

  22. Install the remaining control valve body bolts.

    Tighten:  Tighten the remaining bolts to 11 N.m (97 lb in).

  23. Connect the internal wiring harness to the valve body electrical components.
  24. Install the oil pan, gasket, and filter. Refer to Automatic Transmission Fluid/Filter Replacement .
  25. Lower the vehicle.
  26. Fill the transmission to the proper level using approved fluid.
  27. Fill the transmission to the proper level with Dexron® III transmission fluid. Refer to Transmission Fluid Checking Procedure .
scientia non olet · About LEMON Manuals