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Abs And "!" Brake Light

Discussion in 'Lifted & Offroad Suspension' started by masterfoxscout, Apr 24, 2009.

  1. masterfoxscout

    masterfoxscout New Member ROTM Winner

    Hello All!!!!

    I just had my truck regeared to 4.56 and now both of the brake lights come on. I took it to the dealership, and they said that it was because of the wheel sensor reporting something different than the ABS system expecting. They said it needed to be reprogrammed, but they could not do it as they only deal with stock options. (GM goes to 4.10) Is there anything out there I can buy to program the EBCM or a place that should have one? I have already programed the engine's computer through a Hypertech HyperPAC, but apparently, the EBCM needs tweeking as well. Any help would be great.

    Oh, its a 05 Silverado 1500 LD. 35" Tires and 4.56 Yukon Gears in the front and the rear.
  2. masterfoxscout

    masterfoxscout New Member ROTM Winner

    Anyone have any ideas?
  3. TrailLeadr

    TrailLeadr New Member 1000 Posts

    Sorry, this got overlooked.
    I've never heard of anyone reprogramming the EBCM. Have you checked with the place you bought the gears from? I'm thinking this is likely to be a common situation for them.

    Otherwise, this is just a bump to your thread.
  4. silveradotrailblazer

    silveradotrailblazer New Member ROTM Winner 1000 Posts

    Abs And Brake Light

    I would try returning the truck to stock settings and then reprogram for your new gears and the taller tires. I had my abs come on when I regeared my 05 Silverado with 4.10s . I had driven my truck with the 35s and the trucks ECM for stock 3.42s. When I installed the 4.10s and reprogrammed the ECM for the 4.10s the abs light cae on. I returned the truck back to stock settings, started the truck for a few minutes, shut it off and reprogrammed again with the new settings and everything was fine???????:confused:
  5. masterfoxscout

    masterfoxscout New Member ROTM Winner

    You programmed it with a hand-held? If so, what type did you use?

    Also, how do you like the 4.10s? Is it still doggish or does it get up and go?
  6. AllBlkdOut07

    AllBlkdOut07 New Member ROTM Winner

    I would DEF do 4.56's for 35's. 4.10's are ok, 4.56's are closer to what the stock truck would've felt like.

    My ABS and brake light also came on when I had a 93 octane EFI Live street tune, they tried tweaking the tune to allow for the bigger 35" tires so that the odometer would be accurate. Still haven't heard back from these idiots, speedo is about 10mph off, they have a call into EFI Live .

    New place that will be installing my gears is confident they can fix that.
    Last edited: Apr 28, 2009
  7. silveradotrailblazer

    silveradotrailblazer New Member ROTM Winner 1000 Posts

    Abs And Brake Light

    I used Diablo Preditor programmer. The 4.10s help and seem to be a good comprimise between MPG and pulling. I had 4.56s in my Suburban and wish I had installed them in my Silverado.
  8. AllBlkdOut07

    AllBlkdOut07 New Member ROTM Winner

    Well my friend has an 07 VMax and he's happy enough with the 4.10's the truck came with. But if he had regeared from 3.73's or 3.42's he def would say 4.56's is the way to go.
  9. silveradotrailblazer

    silveradotrailblazer New Member ROTM Winner 1000 Posts

    Abs And Brake Light

    My Suburban came with 3.73s, installed 4.56s. Silverado came with 3.42s, installed 4.10s. Both trucks had 35s.
  10. masterfoxscout

    masterfoxscout New Member ROTM Winner


    Are your ABS/Brake lights still on? Were there any concerns with driving with them on? If you could, once you get that fixed, please let me know how they fixed it. I'm pretty concerned about it. I love the 4.56s, they spin tires like no other. I don't want to get the axle regeared to 4.10 and pay the $2000 to do it.

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