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Thread: 2004 5.3 from Truck, help me identify PCM

  1. #1
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    2004 5.3 from Truck, help me identify PCM

    Hi guys I'm travelling for work and not able to plug in my HPT, but was doing some research and finding conflicting information about what PCM is expected. 2004 Silverado 5.3. I know it is DBW, and believe it to be a 24x setup.

    Is that an E40 PCM? Thank you so much!

  2. #2
    Tuner Life is an Enigma's Avatar
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    2004 Silverado 5.3 The PCM will be a P59 with blue and green plug.

  3. #3
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    Quote Originally Posted by Life is an Enigma View Post
    2004 Silverado 5.3 The PCM will be a P59 with blue and green plug.
    Managed to get some pictures taken. It says "j1 blue" on one side of the PCM and maybe I'm colorblind but the connectors don't look blue to me at least from the outside? Excuse my novice-ness.

    Can you confirm this is a P59? See if these links work.

    https://drive.google.com/file/d/11KC...ew?usp=sharing
    https://drive.google.com/file/d/1-z1...ew?usp=sharing
    https://drive.google.com/file/d/1mkC...ew?usp=sharing


    Thanks again.

  4. #4
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    Inside the connector it has a green or blue key, can't see from outside.

  5. #5
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    Quote Originally Posted by EOG View Post
    Managed to get some pictures taken. It says "j1 blue" on one side of the PCM and maybe I'm colorblind but the connectors don't look blue to me at least from the outside? Excuse my novice-ness.

    Can you confirm this is a P59? See if these links work.

    https://drive.google.com/file/d/11KC...ew?usp=sharing
    https://drive.google.com/file/d/1-z1...ew?usp=sharing
    https://drive.google.com/file/d/1mkC...ew?usp=sharing


    Thanks again.
    Screenshot (38).png

  6. #6
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    Quote Originally Posted by stroh View Post
    Inside the connector it has a green or blue key, can't see from outside.
    Screenshot (39).png