I have a 2001 Dodge Ram with a Cummins 24v. It appears that I have a PCM issue as the CCD is down and I have no gauges. With the PCM disconnected the bus voltages are good and the pulses look good both at the DLC and at the connector (C3) at the PCM. With the PCM connected, the voltages are bad. That tells me the wiring is ok on the bus circuit. I sent the PCM to a repair place in Colorado. They said they found an issue with the bus driver but when I got it back, it has the same issue. Can anyone recommend a good repair place for these PCM's or a source for a refurb. The Dodge part number is 56028508AB. I can't find any cross reference info for other possible PCM's that will work.
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