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Re: PCM going bad MAYBE
truck is running great. still haven't hooked up a.c wiring still deciding how to do it but leaning towards adding diodes on the fan power wire so no chance for any power to back feed to the PCM although pretty sure the back feed was self-inflicted by my mechanic after talking to him. This newest PCM has my correct rear end ratio programed in it and I can tell the difference, now I just need to get a way to read my RPMS at highway speed to make sure the overdrive is working. (don't want to buy a tach as I don't care to have a tach I just want a one time way of seeing what the rpms are.) Also if anyone needs a PCM replaced I have a guy I found on Ebay that did mine and I am impressed. Quick shipping very reasonable price. I am going to order a second as a back up so if or when this one goes out I have aback up. It was plug and play without any issues.
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