hey guys I am having the same problem with my 00 impala, it has 172k on it, and the 3.4L, having the same issues as the guy above with the car not starting, whenever it feels like it, but I have also actually had the car start a few times, and the guages do not work at all, then when I shut off the car, it will not start again for a while. I have replaced the alt, batt, ignition switch, not the ignition cylinder though, starter and I have even done the "bypass" procedure for the passlock system. The problem is extremely weird, I have had it hooked up to scanners, but none of them show anything, I have been told that the scanner would have to be hooked up to it when the problem is actually happening (which is impossible, how am I supposed to get a scanner to hook up to it when its not running without buying one of my own????) anyways this is a huge problem with GM and I would really just like to find a cheap, or free fix that would end this B.S. Please anyone that has any ideas let me know, I have tried everything it seems like. and the dealer wants to charge me $600 for a POSSIBLE solution, might work, might not.
tmbrockett, from what I have read up and been researching for myself it seems to be something most likely with the passlock sensor. Their is really no solution to these problems without bringing it into GM, which realy sucks. anyone out there that knows help us!!!!!