GM Service Manual Online
For 1990-2009 cars only

Removal Procedure


    Object Number: 711676  Size: SH
  1. Remove the front grill assembly. Refer to Grille Replacement in Exterior Trim.
  2. Place a drain pan under the vehicle.
  3. Disconnect the lower oil cooler line from the radiator fitting.
  4. Disconnect the oil cooler line from the auxiliary cooler fitting.
  5. Raise and suitably support the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.
  6. Pull the plastic cap back from the quick connect fitting and down along the cooler line about two inches.

  7. Object Number: 104739  Size: SH
  8. Using a bent-tip screwdriver, pull on one of the ends of the E-clip until the clip is out of position and can be completely removed.
  9. Remove the E-clip from the quick connect fitting.
  10. Discard the E-clip.

  11. Object Number: 104740  Size: SH
  12. Pull the cooler line straight out from the quick connect fitting.

  13. Object Number: 686706  Size: SH
  14. Remove the oil cooler pipes from the clip at the oil pan.

  15. Object Number: 686709  Size: SH
  16. Remove the oil cooler pipes (1,2) from the transmission.
  17. Remove the cooler lines from the vehicle.

Installation Procedure

Important: Do not reuse any of the existing E-clips that were removed from the existing quick connect fittings. All clips being installed must be new.


    Object Number: 104743  Size: SH
  1. Install a new E-clip into the quick connect fittings.
  2. Hook one of the open ends of the E-clips in one of the slots in the quick connect fitting.

  3. Object Number: 104746  Size: SH
  4. Rotate the E-clip around the fitting until the clip is positioned with all three ears through the three slots on the fitting.

  5. Object Number: 104741  Size: SH
  6. Do not install the new E-clip onto the fitting by pushing the clip straight down.
  7. Ensure that the three retaining ring ears are seen from inside the fitting and that the retaining ring moves freely in the fitting slots.

  8. Object Number: 104750  Size: SH
  9. Do not use the plastic cap on the cooler line in order to install the cooler line into the fitting.

  10. Object Number: 104740  Size: SH

    Notice: Ensure that 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.

  11. Install the transmission oil cooler lines to the vehicle.

  12. Object Number: 104753  Size: SH

    Important: 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.

  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. Pull back sharply on the cooler line in order to ensure that the cooler line is fastened into the quick connect fitting.

  16. Object Number: 104754  Size: SH
  17. Ensure that no gap is present between the cap and the fitting.

  18. Object Number: 686709  Size: SH
  19. Insert the cooler line ends (1,2) into the quick connect fittings on the transmission until a click is either heard or felt.

  20. Object Number: 686706  Size: SH

    Notice: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.

  21. Install the oil cooler lines to the clip at the oil pan. Install the oil cooler line clip nut.
  22. Tighten
    Tighten the oil cooler line clip nut to 9 N·m (80 lb in).


    Object Number: 711676  Size: SH
  23. Lower the vehicle.
  24. Connect the oil cooler line to the auxiliary oil cooler fitting.
  25. Connect the lower oil cooler line to the radiator fitting.
  26. Install the front grill assembly. Refer to Grille Replacement in Exterior Trim.
  27. Check the transmission fluid.