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  1. A

    Allison 5sp: TCM Troubles?

    I'll check all this stuff over the weekend when I get a chance, thanks for the advice.
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    Allison 5sp: TCM Troubles?

    Its not just the cluster lights that dim, the headlights will go dim and surge, the tail lights, all the interior lights, I'm guessing something is bad in the tcm and pulling large amounts of power to make those shifts. I'm gonna try and get it to do it tonight and see if its pulling my...
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    2003 Chevrolet 2500hd silverado

    AThomasLB7 submitted a new Showcase Item: 2003 Chevrolet 2500hd silverado Read more about this showcase item here...
  4. 2003 Chevrolet 2500hd silverado

    2003 Chevrolet 2500hd silverado

    2003 LB7 CCSB EFI Live with IdahoRob Tuning, K&N Cold Air Intake, 5" MBRP Straight Pipe, Stage 3 Suncoast Trans built by Dmitri Millard.
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    Allison 5sp: TCM Troubles?

    Truck is a 2003 LB7, EFI Live with IdahoRob Tuning, K&N Cold Air Intake, 5" MBRP Straight Pipe, Stage 3 Suncoast Trans
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    Allison 5sp: TCM Troubles?

    My LB7 has had something going on with the trans since the time I purchased it last August and 13,000 miles ago but I never really thought much about it. When I accelerate heavily on it all of the lights will surge and dim out, it usually only happens under heavy acceleration and around 5th gear...
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