Reply To: 2011 chev avalanche 5.3 4wd no crank no start

[Marvin ChestnutParticipant]

I started at the ebcm ,testing ohm on my high speed data lines ,and the yellow wires are flip floppy .one minute there 120 ohms ,the next time there 253,then they will go to like a dead short to ground and this is without moving anything