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Message: [QUOTE="max2006, post: 295552, member: 5830"] ______________________________________________________ Sounds like your TCM or PCM may be corrupted. Here is a procedure posted by H&S that may help. "Try and read DTCs with your tuner. If you can communicate with the PCM, then the TCM is likely the culprit. You can also test for functionality of the PCM by: Turn key to RUN Find the Brown wire with light green tracer behind the passenger battery Unplug the black connection on that wire, connect the male side of that connection to +12V The truck will crank, and should fire if the PCM is ok. I have seen a couple of TCMs go down lately, it seems they are quite volatile to software corruption. The nice thing about them is that they don't require any vehicle setup to replace them. Simply find a new or used TCM and toss it on your truck. But, depending on how your tuning device works, you may need to get some new tunes written. If the truck cranks but does not start, then the PCM will need to be recovered. I have yet to see a fully failed PCM that we couldn't recover. I have had to ship a few to our shop for some "custom" recovery work, but we have always been able to get them to talk again." [/QUOTE]

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