C 3500 Truck 2WD V8-6.0L VIN U (2001)
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 4.3L engines and auxiliary cooling, remove the cooling lines from the radiator.