Ok, then why don't any of the new, GM's that still use it have a problem? Why haven't we heard of any issues with the new 5.0's, Fiestas, and the 6.7L diesel that also use it? If the coolant is so bad, why has the issue gone away over the years with no change to the formula? Did you also know that most all "green" antifreeze you buy at a store is actually a Dexcool knock off with the dreaded 2-EHA? No mass hysteria issues there either.
I'm well aware of the law suits and I worked on many of those suspect engines, and none of the later stuff has a problem. The engines in your Monte Carlo were still directly related of the engines that had issues, and there cooling systems are still similar. Not knowing anything about cars and using deductive reasoning you can determine the coolant was not the problem. Bimetal engines, vented systems, and crap gasket designs caused the overwhelming majority of the issues, and that is why only a few engines had the problem. I've never seen an Ecotec, High Feature V6, LS engine or any of the Fords in the last few years with the failures either.
They used the wrong elastomers and cheap nylon carriers in there gaskets, the aftermarket and new designs corrected this. I've never seen one come back, and the old style would leak again within 30-40K miles. There was a time when I literally did 3-5 of those engine repairs a day.
To summarize, find me a 6.7, Fiesta, or 5.0 with this issue and I'll stand corrected. I've never seen a new GM (last 5yrs, the High Value V6 is just an evolution of the early crap with poor sealing angles) with any serious issues either. GM can't spec a cooling system worth a damn, otherwise Ford would have the same problems too.
2011 GT 6MT (Cookie Monster) - The 1/4 life crisis. Brembos, 401A, drop top, Grabber Blue.
1974 Dodge Challenger - The money pit. 408 SB stroker, Megasquirt 2 EFI, 904TF, 3.91 gears. 16MPG and 520HP goodness
2004 Hyundai Tiburon - The winter beater.