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Home >> GMC >> 2006 >> Sierra 1500 HD, 4WD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1035 (Automatic Transmission - ALLISON - Removal & Installation, Service, Overhaul, Troubleshooting & Diagnosis) >> Off-Vehicle Repair Information >> Control Valve Body Assemble >> Control Valve Body Assembly

Control Valve Body Assembly

WARNING: This page is about a different car, the 2008 GMC Sierra, 2008 GMC Cab & Chassis Sierra, 2008 Chevrolet Silverado, and 2008 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
    Fig 1: Separating Shift Valve Body Assembly, Separator Plate, And Main Valve Body Assembly
    GM1331397Courtesy of GENERAL MOTORS CORP.
  1. Position main valve body assembly (4) on the work table so that the worm-track side is up.
  2. Align separator plate (2) with main valve body locating pins (3).
  3. Install separator plate (2).
  4. Align shift valve body assembly (1) with main valve body locating pins (3).
  5. Install the shift valve body assembly onto the separator plate.
    6. Fig 2: Shift Valve Body Retaining Bolts
    GM1633330Courtesy of GENERAL MOTORS CORP.
  6. Position the control valve assembly on the work table so that the main valve body is facing up.
    7. NOTE: Refer to Fastener Notice .
  7. Install 11 bolts (1) retaining the valve bodies together.

    Tighten:  Tighten the bolts to 12 N.m (108 lb in).

    8. Fig 3: Locating Shift Solenoid
    GM1331386Courtesy of GENERAL MOTORS CORP.
  8. Position the control valve assembly on the work table so that the shift valve body is up.
    9. IMPORTANT:
    • O-ring (4) is slightly larger than O-ring (3).
    • P/N 29536833 is printed on the shift solenoid 1 (SS1) (5).
  9. Install the solenoid O-ring (4) onto the SS1 (5).
  10. Install the solenoid O-ring (3) onto the SS1 (5).
  11. Align the SS1 (5) so that the electrical connector points away from the nearest locating pin and is parallel to the separator plate as shown.
  12. Install the solenoid retainer (2).
    13. Fig 4: Identifying Pressure Control Solenoids
    GM1331385Courtesy of GENERAL MOTORS CORP.
  13. Position the control valve assembly on the work table so that main valve body (16) is facing up.
    14. IMPORTANT: P/N 29541895 is printed on the pressure control solenoid 1 (PCS1).
  14. Install the solenoid O-ring (14) onto the PCS1 (15).
    15. IMPORTANT: P/N 29541896 is printed on the pressure control solenoid 2 (PCS2).
  15. Install the solenoid O-ring (8) onto the PCS2 (9).
  16. Install the spring (10), PCS1 trim valve (11), spring (12), and trim gain valve (13).
  17. Install the spring (5), PCS2 trim valve (6) and trim gain valve (7).
  18. Install PCS1 (15) so that the electrical connection faces up. Do not seat the solenoid.
  19. Install PCS2 (9) so the electrical connection faces up. Do not seat the solenoid.
  20. Align 2 accumulator plugs (3) so that the spring bores face up.
  21. Install 2 accumulator plugs (3) and 2 accumulator springs (2).
  22. Push PCS1 and PCS2 into the bores until the solenoids seat.
  23. Align the PCS retaining bracket (1) with main valve body locating pin (4).
  24. Install the PCS retaining bracket (1) so that PCS1 and PCS2, the accumulator plugs, and the accumulator springs are retained against the valve body.
    25. Fig 5: View Of Pressure Control Valve Retaining Bracket Retaining Bolts
    GM1331541Courtesy of GENERAL MOTORS CORP.
  25. Install 3 bolts (1) retaining the PCS retaining bracket (2).

    Tighten:  Tighten bolts (1) to 12 N.m (108 lb in).

    26. Fig 6: Identifying Shift Solenoid Assembly
    GM1331380Courtesy of GENERAL MOTORS CORP.
    IMPORTANT:
    • The solenoid O-rings are blue and white.
    • O-ring (3) is slightly larger than O-ring (2).
    • P/N 29536833 is printed on the shift solenoid 3 (SS3).
  26. Install the solenoid O-ring (3) onto the SS3 (4).
  27. Install the solenoid O-ring (2) onto the SS3 (4).
  28. Install the SS3 (4) so that the electrical connection faces up. seat the solenoid.
  29. Install the solenoid retainer (1).
    30. Fig 7: Shift Solenoid Assembly
    GM1331377Courtesy of GENERAL MOTORS CORP.
    IMPORTANT:
    • The solenoid O-rings are blue and white.
    • O-ring (3) is slightly larger than O-ring (2).
    • P/N 29536833 is printed on shift solenoid 2 (SS2).
  30. Install the solenoid O-ring (3) onto the SS2 (4).
  31. Install the solenoid O-ring (2) onto the SS2 (4).
  32. Install the SS2 (4) so that the electrical connection faces up. seat the solenoid.
  33. Install the solenoid retainer (1).
    34. Fig 8: TCC PCS And Components
    GM1581001Courtesy of GENERAL MOTORS CORP.
    IMPORTANT:
    • P/N 29541898 is printed on the torque converter clutch pressure control solenoid (TCC PCS).
    • The solenoid O-rings are green.
    • O-ring (6) is slightly larger than O-ring (5).
  34. Install the solenoid O-ring (6) onto the TCC PCS (7).
  35. Install the solenoid O-ring (5) onto the TCC PCS (7).
  36. Install the TCC PCS spring (3).
  37. Install the TCC PCS valve (4)
  38. Align the TCC PCS (7) so that the electrical connection faces up.
  39. Install the TCC PCS. Seat the solenoid.
  40. Align the PCS retaining bracket (2) with the main valve body locating pin.
  41. Install the PCS retaining bracket (2) so that the TCC PCS is against the valve body.
  42. Install the bolt (1) retaining the PCS retaining bracket (2).

    Tighten:  Tighten the bolt to 12 N.m (108 lb in).

    43. Fig 9: Main Mod Solenoid And Body Assembly
    GM1633324Courtesy of GENERAL MOTORS CORP.
    IMPORTANT:
    • The solenoid O-rings are blue and white.
    • O-ring (3) is slightly larger than O-ring (2)
    • P/N 29536833 is printed on the modulated main pressure (MAIN MOD) solenoid.
  43. Install the O-rings (3 and 4) onto the MAIN MOD solenoid (6).
  44. Install the MAIN MOD solenoid (6).
  45. Install the MAIN MOD solenoid retainer (5) into the bottom of the valve body.
  46. Install the MAIN MOD solenoid body assembly (2).
    47. IMPORTANT: Four bolts pass through the MAIN MOD solenoid valve body to retain the control valve body assembly to the transmission case. Install these bolts when installing the control valve body assembly.
  47. Install the 2 bolts (1) retaining the MAIN MOD solenoid valve body and the shift valve body to the main valve body.

    Tighten:  Tighten bolts to 12 N.m (108 lb in).

    48. Fig 10: TFP Switch And Reverse Signal Pipe
    GM1580997Courtesy of GENERAL MOTORS CORP.
  48. Align the bolts holes and alignment tabs of the transmission fluid pressure (TFP) switch (1) with the TFP switch holes in main valve body (3).
  49. Install TFP switch (1) onto main valve body (3).
    50. Fig 11: TFP Switch And Reverse Signal Pipe Bolts
    GM1581013Courtesy of GENERAL MOTORS CORP.
    IMPORTANT:
    • Bolt (2) is slightly longer than the other bolts (1).
    • The TFP switch is retained by five bolts (1) and by bolt (2).
  50. Install five bolts (1) and one bolt (2) retaining the TFP switch to the main valve body.

    Tighten:  Tighten the bolts to 12 N.m (108 lb in).

  51. Install the reverse signal pipe (2) onto the main valve body.
  52. Install two bolts (3) retaining the reverse signal pipe and the shift valve body to the main valve body.

    Tighten:  Tighten the bolts to 12 N.m (108 lb in).

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