Vehicle has a p0715 - input speed sensor inop. We have replaced sensor and thoroughly check circuits from tcm to sensor. We want to replace tcm with a god used one. Does this have to be reflashed, if so what happens if you don't. Also could use some info on an...

FIX posted 10/5/2013

iATN Members:
Login to view full TechHelp request
Auto Repair Pros:
Join iATN to read this TechHelp request
Vehicle Owners:
Find a nearby iATN member to repair your vehicle