DTC 57
 

my service engine soon light flashes on for a few seconds and goes off. it comes on when i stop but when i gas on it it'll go off. dtc 57 reads pcm 5 volt shorted. im thinking its something to do with the tourqe converter but im really not sure. i have no power lose so for but it has staldded out b4. can anyone give me some help with this. 94 chevy 6.5 1500 its got 154000:s:

check and clean the grounds they play big part with these trucks

The computer ground are at the back right of the intake should be 2 or 3 wires and right under the A/C Dryer on the firewall their are 2 ground straps one goes to back of the head and the other goes to the frame check good and clean their is PMD ground on top of the IP and a ground from right battery to the fender

Also check your ECM fuses