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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 999 (Automatic Transmission - ALLISON (Introduction, Service & Replacement)) >> Repair Instructions >> Transmission Fluid Cooler Hose/Pipe Replacement >> Installation Procedure

Installation Procedure

WARNING: This page is about a different car, the 2004 GMC Sierra, 2004 GMC Cab & Chassis Sierra, 2004 Chevrolet Silverado, and 2004 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
  1. Install the transmission oil cooler lines to the vehicle.
    2. IMPORTANT:
    • Do not reuse any of the existing oil lines or oil line fittings if there is excessive corrosion.
    • Do not reuse any of the existing retaining rings that were removed from the existing quick connect fittings. All retaining rings being installed must be new.
    • Ensure the following procedures are performed when installing the new retaining rings onto the fittings.
  2. Install a NEW retaining ring (E-clip) into the quick connect fitting using the following procedure:
    3. Fig 1: Hooking Retaining Ring Into Quick Connect Fitting
    GM104743Courtesy of GENERAL MOTORS CORP.
  3. Hook one of the open ends of the retaining ring in one of the slots in the quick connect fitting.
    4. Fig 2: Rotating Retaining Ring Around Fitting
    GM104746Courtesy of GENERAL MOTORS CORP.
  4. Rotate the retaining ring around the fitting until the retaining ring is positioned with all three ears through the three slots on the fitting.
    5. Fig 3: Identifying Improper Engine Oil Cooler Hose/Pipe Retaining Ring Installation
    GM104741Courtesy of GENERAL MOTORS CORP.
  5. Do not install the new retaining ring onto the fitting by pushing the retaining ring.
    6. Fig 4: Ensuring Retaining Ring Is Seated Correctly
    GM104664Courtesy of GENERAL MOTORS CORP.
  6. Ensure that the three retaining ring ears are seen from inside the fitting and that the retaining ring moves freely in the fitting slots.
  7. Install the NEW retaining ring (E-clip) into the remaining quick connect fittings.
    8. Fig 5: View Of Cooler Line Quick Connect Fitting
    GM104752Courtesy of GENERAL MOTORS CORP.
  8. Install the cooler line into the quick connect fitting.
  9. Insert the cooler line end into the quick connect fitting until a click is either heard or felt.
    10. Fig 6: Cooler Line & Quick Connect Fitting
    GM104740Courtesy of GENERAL MOTORS CORP.
  10. Install the cooler lines to the vehicle.
    11. Fig 7: Do Not Use Plastic Cap On Cooler Line In Order To Install Cooler Line Into The Fitting
    GM104750Courtesy of GENERAL MOTORS CORP.
  11. Do not use the plastic cap on the cooler line in order to install the cooler line into the fitting.
  12. Pull back sharply on the cooler line in order to ensure that the cooler line is fastened into the quick connect fitting.
    13. Fig 8: View Of Cooler Line & Plastic Cap
    GM104753Courtesy of GENERAL MOTORS CORP.
  13. Position (snap) the plastic cap onto the fitting. Do not manually depress the retaining ring when installing the plastic cap onto the quick connect fitting.
  14. Ensure that the plastic cap is fully seated against the fitting.
    15. Fig 9: Checking For Gap Between Cap & Fitting
    GM104754Courtesy of GENERAL MOTORS CORP.
  15. Ensure that no gap is present between the cap and the fitting.
    16. Fig 10: View Of Cooler Line & Plastic Cap
    GM104753Courtesy of GENERAL MOTORS CORP.
  16. Ensure that the yellow identification band on the tube is hidden within the quick connect fitting. A hidden yellow identification band indicates proper joint seating.
    17. Fig 11: Identifying Improper Joint Seating
    GM104755Courtesy of GENERAL MOTORS CORP.
  17. Do not install the cooler line end into the fitting incorrectly.
  18. If you cannot position the plastic cap against the fitting, remove the retaining ring from the quick connect fitting. Check the retaining ring and the tube end in order to ensure neither is bent. Replace the cooler line or the retaining ring if necessary, and reinstall the cooler line per the installation procedure.
    19. Fig 12: Installing The Cooling Lines To The Radiator (without Auxiliary Cooling)
    GM396802Courtesy of GENERAL MOTORS CORP.
  19. For vehicles without auxiliary cooling, install the cooling lines to the radiator.
    20. Fig 13: Installing The Cooling Lines To The Radiator (with Auxiliary Cooling)
    GM396806Courtesy of GENERAL MOTORS CORP.
  20. For vehicles with auxiliary cooling, install the cooling lines to the radiator.
    21. Fig 14: Installing The Oil Cooling Lines To The Auxiliary Oil Cooler
    GM396817Courtesy of GENERAL MOTORS CORP.
  21. For vehicles with auxiliary cooling, install the oil cooling lines to the auxiliary oil cooler.
    22. Fig 15: View Of Transmission Oil Cooler Lines
    GM396804Courtesy of GENERAL MOTORS CORP.
  22. Install the cooling lines to the transmission.
  23. Install the cooling lines to the clips.
  24. Ensure all of the protective plastic caps are positioned over all of the quick connect fittings.
  25. Lower the vehicle.
  26. Check and add fluid as necessary.
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