One problem related to engine cooling system has been reported for the 1999 Chevrolet C3500. The most recently reported issues are listed below.
2002 -coolant leaking from engine at approx 33,000 miles. Diagnosed as intake manifold gasket and corrected by Chevrolet dealer under warranty. 2005 64000 miles -coolant leaking from engine compartment, discovered cracked radiator, replaced at my expense. 2005 66,000 miles -coolant leaking from engine compartment, replaced water pump. My expense. 2005 70,000 miles-coolant leaking from engine compartment, diagnosed intake manifold gasket again, replaced at my expense. Since purchase I have done everything I can to properly maintain vehicle. Cooling system was supposed to remain sealed for 5 years or 150,000 miles per dealers instructions.
| Manifold/header/muffler/tail Pipe problems | |
| Diesel Engine problems | |
| Engine Cooling System problems |