i have recently bought a 96 1500 5.2 AT 4x4 and it is almost doing the same thing except my gen light and engine light will flash on and off while at the same time every relay ing the fuse box under the hood will click on and of repeatedly turning the ac compressor and fuel pump on and off as long as the key is on ive tried to find a short of some kind or a burnt fusable link but the only thing i found was some wires that had gotten warm in the ignition switch harnes but when i replaced the switch nothing changed it has a reprogramed computer so most of the codes it showed at first were basicaly jiberish but not a snap on solis wont even conect to the truck COMPLEATLY STUMPED

 

Have you tested the battery, alternator and starter yet?

 

sounds like a pcm faliure and needs to be reflashed

has it worked since the reprograming?