if you are gettting fuel and spark, there is no logical reason why your car won't start.
blowing a fuse, then replacing it should not cause your car not to start.
Try resetting the vats. Your owner's manual will tell you how. And yes, some GM models will crank with vats enabled. My wife's 98 Malibu (same crappy 3.1l) did it when I tripped it after installing her auto start.