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Home >> GMC >> 2006 >> Sierra 1500 HD, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1355 (Automatic Transmission - ALLISON - Removal & Installation, Service, Overhaul, Troubleshooting & Diagnosis) >> Repair Instructions - Off Vehicle >> Transmission Fluid Pump Cover Disassemble >> Replacement Procedure

Replacement Procedure

WARNING: This page is about a different car, the 2009 GMC Sierra, 2009 GMC Cab & Chassis Sierra, 2009 Chevrolet Silverado, and 2009 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
    Fig 1: View Of J 24459-5 & J 43770
    GM1207848Courtesy of GENERAL MOTORS CORP.
  1. Install J 24459-5  (1) onto J 43770  (2). See Special Tools .
    2. Fig 2: Installing J 43770, J 24459-5 & Oil Pump Retaining Bolts
    GM1423195Courtesy of GENERAL MOTORS CORP.
  2. Position the oil pump cover assembly (1) on the work table so that the rear of the oil pump cover assembly is facing down.
  3. Align J 43770  (5) and J 24459-5  (4) with the oil pump cover so that:
    • The threaded rod of J 43770  is facing down. See Special Tools .
    • Two bolt holes of J 43770  align with the bolt holes of the oil pump cover. See Special Tools .
  4. Install J 43770  (5) onto the oil pump cover assembly. See Special Tools .
  5. Install 2 oil pump cover retaining bolts (2).
  6. Align the slot of J 24459-5  (4) with the retainer pin (3). See Special Tools .
  7. Using J 24459-5  (4) and J 43770  (5), compress the main regulator valve spring until the retainer pin (3) is loose. See Special Tools .
  8. Turn the oil pump cover so that the pin (3) is accessible.
  9. Using a pick, push the pin through the oil pump cover (1).
  10. Relieve the main regulator valve spring tension.
  11. Remove tools J 43770  and J 24459-5  . See Special Tools .
    12. Fig 3: View Of Stop, Spring & Main Regulator Valve
    GM1423504Courtesy of GENERAL MOTORS CORP.
  12. Remove the stop (3), the spring (2), and the main regulator valve (1).
    13. Fig 4: Identifying 1-2-3-4 Clutch Backfill Valve Spring Pin & J 24459-5
    GM2088917Courtesy of GENERAL MOTORS CORP.
  13. Using J 24459-5  (2), compress the 1-2-3-4 clutch backfill valve spring until the retaining pin (1) is loose. See Special Tools .
  14. Remove the pin.
    15. Fig 5: Identifying 1-2-3-4 Clutch Backfill Valve
    GM2088918Courtesy of GENERAL MOTORS CORP.
  15. Remove the stop (3), spring (2) and the 1-2-3-4 clutch backfill valve (1).
    16. Fig 6: Using J 24459-5 To Compress Oil Pump Lube Regulator Valve Spring
    GM1423583Courtesy of GENERAL MOTORS CORP.
  16. Align the slot of J 24459-5  (2) with the retainer pin (1). See Special Tools .
  17. Using J 24459-5  (2), compress the lube regulator valve spring until the retainer pin (1) is loose. See Special Tools .
  18. Remove the pin.
    19. Fig 7: View Of Lube Regulator Valve, Stop & Spring
    GM1423582Courtesy of GENERAL MOTORS CORP.
  19. Remove the stop (3), the spring (2) and the lube regulator valve (1).
    20. Fig 8: Compressing Converter Relief Valve Spring To Remove Retaining Clip
    GM1423547Courtesy of GENERAL MOTORS CORP.
  20. Using J 43773  (2), compress the converter relief valve spring until the retaining clip (1) is loose. See Special Tools .
  21. Remove the clip.
    22. Fig 9: View Of Converter Relief Valve & Spring
    GM1423512Courtesy of GENERAL MOTORS CORP.
  22. Remove the spring (2) and the converter relief valve (1).
    23. Fig 10: View Of J 24459-5 & J 43770
    GM1207848Courtesy of GENERAL MOTORS CORP.
  23. Install J 24459-5  (1) onto J 43770  (2). See Special Tools .
    24. Fig 11: Using J 24459-5 And J 43770 To Compress Converter Flow Valve Spring
    GM1424538Courtesy of GENERAL MOTORS CORP.
  24. Align J 43770  (5) and J 24459-5  (4) with the oil pump cover so that the following conditions are met: See Special Tools .
    • The threaded rod of J 43770  is facing down. See Special Tools .
    • Two J 43770  bolt holes align with 2 bolt holes in the oil pump cover. See Special Tools .
  25. Install J 43770  (5) onto the oil pump cover assembly (1). See Special Tools .
  26. Install 2 oil pump cover retaining bolts (2).
  27. Align the slot in J 24459-5  (4) with the retainer pin (3). See Special Tools .
  28. Using J 24459-5  (4) and J 43770  (5), compress the torque converter clutch (TCC) valve spring until the retainer pin (3) is loose. See Special Tools .
  29. Using a pick, push the pin through the oil pump cover (1).
  30. Turn the oil pump cover so that the retaining pin is accessible.
  31. Relieve the TCC valve spring tension.
  32. Remove tools J 43770  (5) and J 24459-5  (4). See Special Tools .
    33. Fig 12: View Of Converter Flow Valve, Stop & Spring
    GM1440171Courtesy of GENERAL MOTORS CORP.
  33. Remove the stop (4), the spring (3), and the TCC valve (2).
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