I'm not going to read all the reply's, but I had a similar problem with my
05 dually. The little saddle bag jumper right below the steering column
had just worn out and didn't make good contact. I took the back up one
from the owners manual baggie and inserted it and it's worked fine every
since. I took it to the dealer and they also said they saw no errors.
But that's what it was....
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