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Thread: Another P01 to P59

  1. #1
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    Another P01 to P59

    I searched this, ls1tech, and google searched both forums. I am trying to figure out exactly how to go to a p59 ecm. I have a 2003 express van. Serv 12576106, hdw 12570558. Before I repin the connectors. Am I going to write entire my Silverado file into the ECM? Or do I just work off the Van and now my truck thinks its a Van? The reason for all of this is to go 3 Bar and A/C fan control. If I do keep it as a van do I use the segment swapper? Also do I change the System Platform to GMT610 to GMT800?

    Eric
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  2. #2
    Tuning Addict 5FDP's Avatar
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    You can't write a P01 file into a P59 computer.

    The engine doesn't care what the calibration says, so being a van OS makes no difference. We have no emission testing in Minnesota so the VIN is not an issue either.

    Do whatever you have to do harness wire, then just make the changes to the P59 as you need too. Like segment swap the transmission if you need too, apply the 3 bar OS, copy your data over and so on.

    I'd be curious if everything on the interior will still work, like the dash with a P59 computer swap.
    2016 Silverado CCSB 5.3/6L80e, not as slow but still heavy.

    If you don't post your tune and logs when you have questions you aren't helping yourself.

  3. #3
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    That's kind of what I meant about the Van vs Silverado. BCM, Cluster, etc. The nice part is it is a base model, haha. Crank Windows, Manual Locks.

  4. #4
    Senior Tuner mbray01's Avatar
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    The dash should still work
    i use p59 ecms in earlier trucks and cars quite oftem, for getting features that there just isnt enough room for on a p01
    Michael Bray
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