Hey dudes, I need help diagnosing a problem I'm having with my truck. The truck in question is my 1989 GMC Jimmy with a TBI 350 with 173,000 miles backed up by a 700R4. This truck is daily driven. Ok, now on to my problem: I drove the truck approximately 110 miles from my house to my college (UMR baby!). The truck handled fine the entire way up, power seemed normal, gauge values all stayed acceptable. I got to Rolla and found a nice enough parking spot (I have to park on the street 'cause I don't have a permit yet) and shut her off. I hopped out to make sure i wasn't parked illegally and decided I could pull a bit closer to the curb. So I went to start her up and when I turned the ignition to start it wouldn't turn over. It made a noise like it was attempting to, but no motion. I hopped out, checked the oil and antifreeze, both were fine. Nothing seemed amiss. I then tried again with the same result. I decided to give it a rest, let the truck cool down and not get myself too excited before class the next day. Ok, now today I go to the truck with my fingers crossed and try it again. No luck. I tried to turn it over three times with the same result, and on the third try something blew and I no longer got power to accessories when I turned the ignition to Run. It will no longer even attempt to turn over now. I observed that the volt meter dropped immedately to zero when I attempted to start the truck. It think what was happening was that power would be cut as soon as I energized the starter. This seems to indicate a short to me, and I hope to god it is something that simple because although a motor swap sounds like a kickass idea to me, I am a poor college student with negative money. Another thing I observed is that when I tried the power door locks I would get a buzzing noise from under the dash. The buzzing comes from a rectangular black box maybe 3"x4"x1" with a white 10 pin plug going to it. This box is located on the driver's side to the right side of the steering column. The buzzing happens as long as the lock button is depressed and has never occured before. Thanks for reading and please give me your thoughts. This truck is my baby and I am extremely nervous right now.