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Mitch Eichenberger (not verified)    December 22, 2024 - 11:15AM

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I own a 21 Sierra with 45k mi. Love the truck,so far no issues other than second to third gear rough shift when cold. Oil change at dealer every 4-4.5k. thinking about trans oil and filter along with next oil change.ext.warranty. I also use a range inhibitor.

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