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General GM ChatWhen starting new posts, please specify YEAR, MAKE, MODEL, ENGINE type, and whatever modifications you have made.
Chat about all things GM (and related cars). Off-topic stuff should be in the Lounge, and all Model specific mechanical problems should be posted in the proper forum.
i know our gmc serria has that oil life monitor on it and its has always been spot on. it says to cange the oil and i uasally check it and the oil always looks dark but not black. i trust ours