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i would say that overall, GM probably won't do much for the warranty on it. This is what I like about Ford. They have deals setup with a few tuners (Roush, Saleen, and some others) where it does not void your warranty as long as it's done by their authorized shops and their authorized parts. I would think at the very least GMPP would have some things, such as this, that would still be under factory warranty.
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