K 1500 Truck 4WD V8-6.5L DSL Turbo VIN S (1999)
5. Disconnect the oil cooler line from the fitting at the radiator.
Important: Perform the following procedures when removing the retaining ring and cooler line from the quick connect fitting on the transmission.
6. Pull the plastic cap back from the quick connect fitting and down along the cooler line about two inches.
7. 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.
8. Remove the retaining ring from the quick connect fitting.
9. Discard the retaining ring.
