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Home >> GMC >> 2006 >> Sierra 1500 HD, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 237 (Automatic Transmission - 4L80-E/4L85-E (Service & Replacement)) >> Repair Instructions >> Transmission Oil Cooler Line Quick Connect Fitting >> Installation Procedure

Installation Procedure

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Important: 

  1. Install a new retaining ring into the quick connect fitting using the following procedure:
  2. Hook one of the open ends of the retaining ring in one of the slots in the quick connect fitting.
    Fig 1: Hooking Open End Of Retaining Ring Into Slot
    G02424524Courtesy of GENERAL MOTORS CORP.
  3. Rotate the retaining ring around the fitting until the retaining ring is positioned with all three ears through the three slots on the fitting.
    Fig 2: Rotating Retaining Ring Around Fitting
    G02424525Courtesy of GENERAL MOTORS CORP.
  4. Do not install the new retaining ring onto the fitting by pushing the retaining ring.
    Fig 3: Identifying Improper Installation Of Retaining Ring
    G02424526Courtesy of GENERAL MOTORS CORP.
  5. Ensure that the three retaining ring ears are seen from inside the fitting and that the retaining ring moves freely in the fitting slots.
    Fig 4: Ensuring Proper Installation Of Retaining Ring
    G02424527Courtesy of GENERAL MOTORS CORP.
  6. Install the cooler line into the quick connect fitting.
  7. Insert the cooler line end into the quick connect fitting until a click is either heard or felt.
    Fig 5: Installing Cooler Line Into Quick Connect Fitting
    G02424528Courtesy of GENERAL MOTORS CORP.
  8. Do not use the plastic cap on the cooler line in order to install the cooler line into the fitting.
  9. Pull back sharply on the cooler line in order to ensure that the cooler line is fastened into the quick connect fitting.
    Fig 6: Identifying Improper Installation Of Cooler Line
    G02424529Courtesy of GENERAL MOTORS CORP.

    Important:  Do not manually depress the retaining clip when installing the plastic cap.

  10. 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.
  11. Ensure that the plastic cap is fully seated against the fitting.
    Fig 7: Ensuring Proper Installation Of Plastic Cap
    G02424530Courtesy of GENERAL MOTORS CORP.
  12. Ensure that no gap is present between the cap and the fitting.
    Fig 8: Ensuring No Gap Is Present Between Cap & Fitting
    G02424531Courtesy of GENERAL MOTORS CORP.
  13. Ensure that the yellow identification band on the tube is hidden within the quick connect fitting.
    Fig 9: Ensuring Yellow Identification Band Is Hidden
    G02424532Courtesy of GENERAL MOTORS CORP.
  14. A hidden yellow identification band indicates proper joint seating.
  15. Fill the transmission to the proper level with Dexron® III transmission fluid. Refer to Transmission Fluid Checking Procedure .
    Fig 10: Identifying Improper Joint Seating
    G02424533Courtesy of GENERAL MOTORS CORP.