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Re: GMC c6500 parking brake module DTCs
Posted to HD/Fleet Forum on 4/22/2020 1 Reply

Scott, here are the codes and a diag manual. If the minders pull these before you see them email me. This is a system that is expensive and touchy. At one point I bought a package of 10 used Ryder trucks with this setup. Most of them we converted back to the s... Login to read more.

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