Automatic Transmission-4L80-E
Removal Procedure1. Raise the vehicle. Refer to Vehicle Lifting.
2. Remove the oil cooler lines from the transmission and radiator.
Important: Perform the following procedures when removing the retaining ring and cooler line from the quick connect fitting on the transmission.
3. Pull the plastic cap back from the quick connect fitting and down along the cooler line about two inches.
4. Using a bent-tip screwdriver, pull on one of the open ends of the retaining ring in order to rotate the retaining ring around the quick connect fitting until the retaining ring is out of position and can be completely removed.
5. Remove the retaining ring from the quick connect fitting.
6. Discard the retaining ring.
7. Pull the cooler line straight out from the quick connect fitting.
8. Remove the retaining ring (E-clips) securing the cooler line to the quick connect in order to remove the remaining cooler lines from the remaining quick connect fittings.
9. Remove the cooler lines from the vehicle.
Installation Procedure
1. Install the oil cooler line to the transmission and radiator.
Important: 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.
2. Install the new retaining ring (E-clip) into the quick connect fitting.
3. Hook one of the open ends of the retaining ring in one of the slots in the quick connect fitting.
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. Do not install the new retaining ring onto the fitting by pushing the retaining ring down over the fitting.
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. Install the cooler lines to the vehicle.
9. Install the cooler line into the quick connect fitting.
10. Insert the cooler line end into the quick connect fitting until a click is either heard or felt.
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. 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. Ensure that no gap is present between the cap and the fitting.
16. Ensure that the yellow identification band on the tube is hidden within the quick connect fitting.
17. A hidden yellow identification band indicates proper joint seating.
18. Install the remaining oil cooling lines to the fittings.
19. Lower the vehicle.