I don't know why, but you just have your Balts that are shit and then you have some that are nice, maybe different manufacturing plants, or something...regardless, what it comes down to is proper and preventive maintenance(not saying you haven't properly maintaned your Cobalt). I have raw dogged the piss out of my Cobalt for the past 12 Months and no issues, Foximus has a 2006 with over 100,000 miles and it's running just fine, all you'll have to do, is get it back up to spec. . .maintain it, and she'll be just fine for ya...sad to hear about all of the problems but hopefully we can help you figure them out and get you to lovin your Cobalt as much as I love mine...
2008 Black Cobalt LT Sedan - SOLD
2009 Rally Yellow Cobalt SS/TC Coupe - SOLD
2002 Alpine White Impreza WRX - CURRENT