K 2500 Yukon 4WD V8-6.0L VIN U (2000)
Discard the retaining ring.
7. Pull the cooling line straight out from the quick connect fitting.
8. Repeat this procedure to remove all the remaining cooling lines from quick connect fittings.
9. For vehicles with 4.3L- engines, remove the cooling lines from the radiator.
10. For vehicles with 4.3LL engines and auxiliary cooling, remove the cooling lines from the radiator.
