Put the finishing touch on your lifted vehicle with Rough Country's Speedometer Calibration Device!
This Speedometer Calibrator helps you quickly and easily reprogram your vehicle's speedometer to match the output of larger tires.
Your vehicle's computer is designed to track speed based on stock tire height.
When upgrading to larger tires, there will be a discrepancy between actual speed and the readout on your speedometer.
This plug and play device connects directly to your vehicle's Diagnostic Link Connector Port and in just a few short minutes, your speedometer reads true again!
Rough Country's Speedometer Calibration Devices don't simply change your in-dash readout; they update your vehicle's ECM, ensuring accurate shift points and proper electronic stability control.
Finally, you can get an affordable and accurate speedometer calibration with an easy and intuitive setup process!
This device can also read and check all diagnostic codes to help manage check engine light and service needed messages, and includes a function to reset the speedometer back to stock prior to servicing the vehicle.
Includes a 1-Year warranty.
NOTE: (fits) 2019-2020 Chevy Silverado GMC Sierra 1500 2020 2500HD.
