Q: ABS brake control module location on 2001 GMC Sierra 2500 HD

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My brake light and ABS light keep coming on intermitantly, not all the time. I was told it is the module and needs to be replaced. Where is it located on my truck?
(3) Answers
(1) Comments
under the truck on or above the frame rail

why are you replacing it?? what was the code and did a shop do a diag??