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?
I have a 1995 chevy K3500 5.7L tbi, 4 door, AC\heat, power windows mirrors locks seats.
It's having a power\ acceleration problem, hard shifting, no check engine light is on. It's like the engine doesn't want to open all the way up with "pedal to the metal" after 60mph slowly climbs I took it...