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ABS or Hydro Boost problem?

Guitar Jones

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Joined
May 21, 2011
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Maybe some one here that has experience with the GM trucks may have come across this before. I have a 2002 GMC 2500HD 4wd. When lightly braking just before the vehicle comes to a stop it feels like the ABS is working, doesn't do it all the time but it's worse when it's cold.

I'm not sure if it's actually the ABS or the Hydra Boost though. I don't want to waste a bunch of money guessing as to what this is because I'm sure neither the ABS unit or the Hydra Boost unit are cheap. Truck stops fine though, with no other issues.

Any help would be greatly appreciated.
 
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