C 1500 Yukon 2WD V8-5.3L VIN Z Flex Fuel (2003)
2. Hook one of the open ends of the retaining ring in one of the slots in the quick connect fitting.
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.
4. Do not install the new retaining ring onto the fitting by pushing the retaining ring.