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truethinker
November 16th, 2014, 10:57 AM
My father-in-law has a 2014 Silverado 4x4, 5.3L, 6L80E and is going to be switching from his 265/65r18's to 265/70r18's. As this is a 1" diameter change the speedometer will be noticeably off. The shift points too I would imagine.

I've done the speedometer and shift point calibrations on older vehicles but wanted to find out if I could take care of this for him on this truck once he makes the change.

Thanks
Jesse