I've got a 2002 z71 , i have a code that's been popping up, not bad i just haven't had the time to fix it, i just reset it with my code reader. I went to do it today and the reader wouldn't work, i figured maybe it took batteries, no batteries. I concluded it was finally dead for whatever reason. Just now i decided to try it in my car, the moment i plugged it in, it turned on, tried it again in the truck, absolutely nothing. I've used it in the truck a million times and never had had an issue, nothing has changed with the truck since the last time probably last week i plugged it in. The 5 wires going into the back of the plug seem to look fine and the 5 pins in the plug are all the way forward. I stumped as to what it could be, is there a fuse? I'm in quite a pickle because i have to clear it out to get it smogged next week before my tag expires ( you automatically get failed if there is a check engine light on) and i have no way of doing that now.