RE: 4.3L cooling system
 

I think you may be right about the head gasket. So on a whim I went to Autozone and bought a bottle of this stuff called "Blue Devil" it was $60 it says that no mater what type of coolant leak you have it will fix it guaranteed or your money back. A last resort before tearing the hole motor down. I will right back to let you guys know if it works.

RE: 4.3L cooling system
 

Whats your oil pressure at?? Is it higher then normal?? If your losing coolant that badly I would check the oil dipstick tube to see if its a milky brown!! If so it could be your intake manifold gaskets that went out its one of the more common problems with our engines!!

RE: 4.3L cooling system
 

The oil pressure is about 40 psi at idle. I put that "Blue Devil" in about a week ago and have not lost a drop of coolant since then. I will keep my fingers crossed. So far it is a damn good product.

RE: 4.3L cooling system
 

Hope it works out for you!