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Thread: 2003 ram 2500 5.7 with 05 pcm

  1. #1
    Potential Tuner
    Join Date
    Apr 2018
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    3

    2003 ram 2500 5.7 with 05 pcm

    I'm planning on putting a supercharger on my truck, and my PCM does not support tuning. I ordered a PCM from an 05 with similar options. When I plug it in I have some wierd things going on. The abs light is on and making noise, and the gear indicator is flashing all positions. It does start and run though. Has anyone had this issues before?

  2. #2
    Potential Tuner
    Join Date
    May 2019
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    2
    Hello, I have a 03 ram 1500 with a 05 manual trans pcm. I added the 2nd O2s wiring and stripped the trans wiring. Did this several years ago. No drama..

  3. #3
    Potential Tuner
    Join Date
    Jul 2018
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    Stripped the trans wires?

  4. #4
    Advanced Tuner Blue Bee's Avatar
    Join Date
    Mar 2017
    Location
    DFW
    Posts
    322
    Can't just plug it in, there some wiring that needs to be done. 2003 is a separate trans controller, 2005 PCM has TCM built into it.