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Old 01-22-2017, 12:51 PM   #5
NGN
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Join Date: Nov 2001
Location: Old Bridge,NJ
Posts: 814
Re: Q- speedo off & bad MPG

Ever since I replaced my broke rear in my 06 Silverado at 86k , now 162k with replacement, the speedometer has been off similar to yours , man at the bone yard said it was a match , o well it rolls. So maybe the rears been replaced in the pass with different gears causing the problem.
Nick
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