Hello and good day,
The odb2 trapezoid wont acess the ECM, just the transmission and abs and SRS.
2007.5 LMM c4500 bus
Should I have a j1939 9-pin port? Are there ports in the engine bay under the hood?
Bought an 06 Topkick C4500 with LBZ motor in a non-running condition. Truck has less than 100K on it. Batteries had been disconnected so no codes. Rebuilt primer and it pumps up good, FRP 9k while cranking. It hits a little while cranking. Where to go from here? Anyone one have a trouble...