-Optispark
-Transmission may crap out on you anytime over 100,000 mi
-Sparks plugs are a bitch to change
-The famous head-gasket oil leak may show up
-Power window motors are shit (seems to be a GM standard)
-Gas gauge that once you hit half tank you might as well assume that you have a 1/4 tank or less

other than that nonsense, it's all good for the most part