When I opened the Gear/Tire Wizard it says Gear Ratio = 3.73. I bought this truck new and it came with 3.42 gears and the RPO codes confirms GU6 which is 3.42. Then I open the Speedo window and it says Final Drive: Ratio = 3.42, Ratio - Error = 1.00, Trans = 3.73. I hope this isn't a stupid question.
2012Silverado1500stocktune.hpt
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