My Stock picker will not get past the start up test. I key it on and it will wrench out on me giving me a 208 code. During the start up sequence the K5 relay will kick in and out drastically. It almost sounds like teeth chattering or a typewriter. It will do that and then wrench out.

I have swapped parts with another truck that I know was working. I swapped out distribution board, traction control card, display, K5 relay, steering module, wire harness for steer module, and steer motor. Nothing would work. but all parts taken off the bad truck I used on the good truck and they all worked fine.

I am at a loss here. Any ideas?

thanks,