Leaking coolant

The 3.1 engines are common for an intake manifold gasket leak. You need to get his fixed. If your luckier it is leaking externally and not internally as it can ruin the engine.

Best bet is get it pressure tested at a shop and have them verify the leak before something more serious happens. There are a variety of possibilities and you don't want to change things on heresay.

IF you want to do some checking yourself, I can try to guide you through some possiblilities.

I don't believe Dex-cool is the source of the problem. I do believe it is oor engineering as the problem is not reoccuring if the job is done right with the right materials. The exception is the 3800 engine. The force of the coolant, (dex-cool or otherwise) exposes an engineering flaw that invloves pressure eroding.

Exactly what I meant, the Dex-cool wasn;t the problem, it was the engineering and specified gaskets they used.

Glad you posted that, these are problems that GM should take a hit on.

Yep its happens, please let us know the outcome so it will help others.

Cheers, Ken