Message #435726

[mod93dirt]

Next things to look for would be a cracked head or block, or head gasket. Can't remember what year the vortec motors started, but the vortec heads do not tolerate heat very well. Are you losing coolant? If so, I'd get a pressure tester and check your oil for coolant which would tell you there is a crack somewhere. Or pull plugs and look for water and a blown head gasket.