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Thread: New PCM, A/C won't work and it's 104!

  1. #21
    Lifetime Member EagleMark's Avatar
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    I'm not sure about the diesel programming but have had similar issues with gas PCM swaps and OS changes. It is in which way the OS was set in parameters
    G1001 to G1009 with an emphasis on G1006.

    HTH!

  2. #22
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    Quote Originally Posted by EagleMark View Post
    I'm not sure about the diesel programming but have had similar issues with gas PCM swaps and OS changes. It is in which way the OS was set in parameters
    G1001 to G1009 with an emphasis on G1006.

    HTH!
    Sorry, this is actually for a 1999 GMC Sierra 1500 rcsb with a 6.0 that originally had a 5.3

    This just came up in search, and didn't realize it was in diesel section until part way into thread conversation

    ;-)

    Also when I type in G1001 or G1006 in tune tool it isn't found, that must be for different ECU or OS than mine

  3. #23
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    Default Re: New PCM, A/C won't work and it's 104!

    You're on your own there then. I have no idea about gas engines.

  4. #24
    Lifetime Member EagleMark's Avatar
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    Quote Originally Posted by sac811 View Post
    Sorry, this is actually for a 1999 GMC Sierra 1500 rcsb with a 6.0 that originally had a 5.3

    This just came up in search, and didn't realize it was in diesel section until part way into thread conversation

    ;-)

    Also when I type in G1001 or G1006 in tune tool it isn't found, that must be for different ECU or OS than mine
    Look in System folder for an AC folder and compare the new OS to old OS...

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