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Thread: 6l80 help!

  1. #1
    Junior Member
    Join Date
    Oct 2017
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    19

    Default 6l80 help!

    Looking at the tunning files and there is a normal shift , pattern a , and pattern b. What is the difference between the three and what is the A and B?? Then lookin gat the shift pressure folder there is a, a , b and c just wondering what these are im assuming one is maybe tow haul??
    -thanks for the help

  2. #2
    Joe (Moderator) joecar's Avatar
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    Apr 2003
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    27,752

    Default

    You will need to refer to the service manual for your vehicle to see which pattern maps to Normal, A, B.

  3. #3
    Lifetime Member
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    Sep 2007
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    204

    Default

    From what I've been able to gather, normal shift is when the shifter is in D, pattern A is when the shifter is in M, and pattern B is tow/haul on trucks or sport mode in cars. No guarantees this is correct.

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