short in dash gages

[mobzs]

i have a 93 s10 blazer 4.3L i just bought. 2 days after buying it i lost all my gages, cruise control, the ability to charge my battery, and gained a very doggish transmition. a blown fuse was the problem, it was labled 'gage\ign'. when i got to work and after 3 20A fuses i jumpered in an aviation styled circuit breaker ( i'm an aircraft mech). that night on the way home no problem and for the next 2 weeks. but last night major problems. i had an hour and 1\2 drive home with the warning tone sounding in my ear, the same one that sounds when you turn your lights on without starting you truck. th c.b. would pop i would try and reset it but it wouldn't take. i did notice tat when i would cycle the gear shifter ( i.e. 1, 2, d, and over drive) i was able to reset the c.b. my question is the transmittion have anything electrial that controls it. i'm waiting for this weekend to crawl under and take a look my self. any info you guys might have on this would help me when the time comes.

[RABarrett]

This vehicle is electronically controlled via the PCM, or powertrain control module. You might try disconnecting the connector and see if the other problems are eliminated, such as the popping cb. You might also look for pinched wiring, broken connectors. In particular, check the torque convertor clutch wiring. This fuse, I believe, directly supplies power to this component. Ray

[mobzs]

thanks for the info. i found the short, it was in my harness for my o2 sensor.the shifting i was doing before was just jerking the truck around enough to move the short. the harness was routed too close to my exhaust manifold and melted the connector to the wire. the o2 sensor looks new, so i would say some one wasn't thinking when they put it on. i couldn't get just the small section i needed(junkyard wanted $50.00 for the whole eng harness). so i picked up a quick dissconnect trailer harness($6.00) from the store and spliced that in. i got my gages,altenator, and cruise control back. but now i have another problem, i believe its a result of now corrected short. my 1st gear is a dog(auto transmition) and i have no overdrive. i can manually shift to first and it works great. also, it feels like i'm starting from second instead of first. does the pcm or the torque convertor clutch wiring you metioned have anything to do with the problems i have? is it something i can switch out? whereabout are they located? here's what i think happened, the short fried my pcm or something like that. can you help?