DexCool: anyone else have problems?

[nkopper]

I took my wife's 70,000 mile 2000 Bonneville to the mechanic earlier this week because it had developed a missfire, but no computer codes were set off. I checked everything I could and it all looked OK. Upon further inspection, the mechanic found that all of the intake manifold gaskets have been literally destroyed by DexCool. There was some water in the cylinders and oil, but the engine suffered no damage and the intake was not cracked. It still cost over $500 to fix, though. I also had them flush the system and replace the coolant with green antifreeze. The worst part is that GM is not accepting responsibility and refuses to pay for the repairs. When confronted about the problem, GM claims overheating the engine probably caused the problem. I know for a fact that this car has never run hot. I have always bought and driven GM vehicles exclusively, but I might have to think twice before buying my next vehicle.



Nathan