Thank you for the replies. This is so helpful to me. I am so unfamiliar with all of this its great to have real world information. I will try only monitoring one thing at a time and see if that makes any difference. But since these trucks normally act... normal haha, and im pretty sure my reader is fine, unless there is some strange compatibility issues, is this a sign of a bad vcm? (or whatever the brains of the truck are called). Also, would poor grounds or other conections imped comms with the reader? Maybe thats all it is. The truck was not put back together very well by the PO
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