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Re: 2002 pontiac grand prix abs+trac light on
A bad hub could cause it, but you'd still have some sort of DTC.
Two things though, your reader has to be capable of reading ABS codes, and two, the ABS light has to be on for the code to be able to be read. When I had my ABS light on my reader couldn't read it. I went into Advance and grabbed their reader and it showed the right front.
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