No but, I bought a Speedometer Calibrator from Hypertech when I upgrade my stock 2500 to 35 inch tires. Pretty easy to use and I am not mechanic. Took a couple test runs of adjusting tire sizes but, my speedometer matches my GPS.
If this helps any.
A helpful hint. This device marries itself to your truck. It cannot be used on more than one truck.
If this helps any.
A helpful hint. This device marries itself to your truck. It cannot be used on more than one truck.
