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Home >> GMC >> 2006 >> Sierra 1500 HD, 4WD >> Repair and Diagnosis >> External Pages >> Different car >> Section 113 (Automatic Transmission Servicing (4L60-E)) >> Removal & Installation >> Oil Cooler Lines >> Installation

Oil Cooler Lines: Installation

WARNING: This page is about a different car, the 2003 GMC Savana and 2003 Chevrolet Chevy Express. However, it is still accessible from the selected car via links, so may be relevant.
NOTE: Do not reuse any of the existing oil lines or oil line fittings if there is any 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 the transmission oil cooler line to the vehicle.
  2. Install a new retaining ring (E-clip) into the quick connect fitting using the following procedure:
    • Hook one of the open ends of the retaining ring in one of the slots in the quick connect fitting. See Fig 1 .
    • 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 2 .
    • DO NOT install the new retaining ring onto the fitting by pushing the retaining ring. See Fig 3 .
  3. 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 4 .
  4. Install the new retaining rings (E-clips) into the remaining quick connect fittings.
    NOTE: Ensure the cooler line being installed has a plastic cap on each end that connects to a quick connect fitting. If no plastic cap exists, or the plastic cap is damaged, obtain a new plastic cap and position on to the cooler line prior to the cooler line installation.
  5. Install the cooler lines to the vehicle. 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 5 .
    NOTE: Do not use the plastic cap on the cooler line to install the cooler line into the fitting. See Fig 6 .
  6. Pull back sharply on the cooler line to ensure the cooler line is fastened into the quick connect fitting. Position (snap) the plastic cap onto the fitting. See Fig 7 . 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.
  7. Ensure no gap is present between the cap and the fitting. See Fig 8 . Ensure the Yellow identification band on the tube is hidden within the quick connect fitting. See Fig 9 . A hidden Yellow identification band indicates proper joint seating.
  8. 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 per Step 5 of the cooler line removal procedure. 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 per step 2 of the cooler line installation procedure.
  9. Install the cooler lines into the retaining clip at the oil pan. Install the flair nut securing the lower oil cooler line to the radiator. Tighten the flair nuts to specification. See TORQUE SPECIFICATIONS  .
  10. Lower the vehicle. Install the flare nut securing the upper cooler line to the radiator. Tighten the flair nut to specification. See TORQUE SPECIFICATIONS  . Start the engine.
Fig 1: Starting Retaining Ring Onto Quick Connect Fitting
G00088355Courtesy of GENERAL MOTORS CORP.
Fig 2: Installing Retaining Ring On Quick Connect Fitting
G00088356Courtesy of GENERAL MOTORS CORP.
Fig 3: Identifying Incorrect Method Of Installing Retainer Ring
G00088357Courtesy of GENERAL MOTORS CORP.
Fig 4: Identifying Correctly Installed Retainer Ring
G00088358Courtesy of GENERAL MOTORS CORP.
Fig 5: Installing Cooler Lines To Quick Connect Fitting
G00088359Courtesy of GENERAL MOTORS CORP.
Fig 6: Identifying Incorrect Installation Method Using Plastic Cap To Install
G00088360Courtesy of GENERAL MOTORS CORP.
Fig 7: Identifying Installed Quick Connect Fitting
G00088363Courtesy of GENERAL MOTORS CORP.
Fig 8: Checking For Improper Gap
G00088361Courtesy of GENERAL MOTORS CORP.
Fig 9: Checking For Identification Band
G00088362Courtesy of GENERAL MOTORS CORP.
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