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  1. 1 Week Ago #1
    Mikereal12
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    Ive already gone through all those and couldnt find a 12585950 calibration with the 4l60e option on there... Is it bad to run my truck with it set to 4l80e or do I need to change it (setting says never change it)
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  2. 1 Week Ago #2
    dave w
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    Quote Originally Posted by Mikereal12 View Post
    Ive already gone through all those and couldnt find a 12585950 calibration with the 4l60e option on there... Is it bad to run my truck with it set to 4l80e or do I need to change it (setting says never change it)
    The attached is a 2004 _ 4.8 / 4L60E OS 12585950

    VIN 2GCEK19V441108877
    Attached Files Attached Files
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  3. 1 Week Ago #3
    dave w
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    Quote Originally Posted by dave w View Post
    The attached is a 2004 _ 4.8 / 4L60E OS 12585950

    VIN 2GCEK19V441108877
    Added to library - Post #81
    http://www.gearhead-efi.com/Fuel-Inj...043#post102043
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  4. 1 Week Ago #4
    Mikereal12
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    Quote Originally Posted by dave w View Post
    The attached is a 2004 _ 4.8 / 4L60E OS 12585950

    VIN 2GCEK19V441108877
    Thnk you sir! It does look like alot of the transmission setting are different in yours. Hopefully making them match helps!
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