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Oil Cooler Lines: Installation

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CAUTION: 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.
  1. Install a NEW retaining ring (E-clip) into the quick connect fitting using the following procedure:
    1. Hook one of the open ends of the retaining ring in one of the slots in the quick connect fitting. See Fig 5.
    2. Rotate the retaining ring around the fitting until the retaining ring is positioned with all 3 ears through the 3 slots on the fitting. See Fig 6.
    3. Do not install the new retaining ring onto the fitting by pushing the retaining ring. See Fig 7.
  2. Ensure the 3 retaining ring ears are seen from inside the fitting and that the retaining ring moves freely in the fitting slots. See Fig 8. Install the NEW retaining ring (E-clip) into the remaining quick connect fittings. Install the cooler line into the quick connect fitting. Insert the cooler line end into the quick connect fitting until a click is either heard or felt. See Fig 9.
  3. Install the cooler lines to the vehicle. See Fig 2. Do not use the plastic cap on the cooler line in order to install the cooler line into the fitting. See Fig 10.
  4. Pull back sharply on the cooler line in order to ensure the cooler line is fastened into the quick connect fitting. Position (snap) the plastic cap onto the fitting. See Fig 13. Do not manually depress the retaining ring when installing the plastic cap onto the quick connect fitting. Ensure the plastic cap is fully seated against the fitting.
  5. Ensure that no gap is present between the cap and the fitting. See Fig 11. Ensure the Yellow identification band on the tube is hidden within the quick connect fitting. A hidden Yellow identification band indicates proper joint seating. See Fig 12. DO NOT install the cooler line end into the fitting incorrectly. If you cannot position the plastic cap against the fitting, remove the retaining ring from the quick connect fitting.
  6. 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. For vehicles without auxiliary cooling, install the cooling lines to the radiator.
  7. For vehicles with auxiliary cooling, install the cooling lines to the radiator and the cooling lines to the clip and the oil cooler.
  8. Install the cooling lines to the transmission. Install the cooling lines to the clips. Ensure all of the protective plastic caps are positioned over all of the quick connect fittings. Lower the vehicle. Check and add fluid as necessary. See LUBRICATION .
Fig 1: Removing Retaining Ring
G00088353Courtesy of GENERAL MOTORS CORP.
Fig 2: Removing & Installing Cooler Line From Quick Connect Fitting
G00088354Courtesy of GENERAL MOTORS CORP.
Fig 3: Removing & Installing Fittings At Radiator
G00096141Courtesy of GENERAL MOTORS CORP.
Fig 4: Disconnecting Connecting Fittings At Auxiliary Cooler
G00096142Courtesy of GENERAL MOTORS CORP.
Fig 5: Starting Retaining Ring Onto Quick Connect Fitting
G00088355Courtesy of GENERAL MOTORS CORP.
Fig 6: Installing Retaining Ring On Quick Connect Fitting
G00088356Courtesy of GENERAL MOTORS CORP.
Fig 7: Incorrectly Installing Retainer Ring
G00088357Courtesy of GENERAL MOTORS CORP.
Fig 8: Correctly Installing Retainer Ring
G00088358Courtesy of GENERAL MOTORS CORP.
Fig 9: Installing Cooler Lines To Quick Connect Fitting
G00088359Courtesy of GENERAL MOTORS CORP.
Fig 10: Incorrect Installation Method Using Plastic Cap
G00088360Courtesy of GENERAL MOTORS CORP.
Fig 11: Checking For Improper Gap
G00088361Courtesy of GENERAL MOTORS CORP.
Fig 12: Checking For Identification Band
G00088362Courtesy of GENERAL MOTORS CORP.
Fig 13: Installed View Of Quick Connect Fitting
G00088363Courtesy of GENERAL MOTORS CORP.
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