You have no items in your shopping cart.

Speedometer Calibrator 07-18 Chevy/GMC 1500/2500HD/3500HD Rough Country

Manufacturer: Rough Country
SKU: 90009T-DHTP
Manufacturer part number: 90009T
+ -

Put the finishing touch on your lifted vehicle with Rough Country's Speedometer Calibration Device! This easy-to-use Speedometer Calibrator helps you quickly and easily reprogram your vehicle's speedometer to match the output of your larger tires.

Your vehicle's computer is designed to track the speed based on your stock tire height. When upgrading to larger tires, there will be a discrepancy between your 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 just 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 easily read and check all diagnostic codes to help you manage check engine light and service needed messages, and also includes a function to reset the speedometer back to stock prior to servicing the vehicle. Includes a 1-Year Warranty.

  • Speedometer Calibrator 07-18 Chevy/GMC 1500/2500HD/3500HD
  • Resets your speedometer to accurate readings for larger tires
  • Fits gas and diesel models
  • Easy Plug and Play connection
  • Updates OE ECM Shift Points to accommodate larger tires
  • Recalibrates Electronic Stability Control to work with larger tires
  • Reads diagnostic codes like check engine light
  • Option to return to stock settings
  • 1-year warranty


  • Does Not fit 07-13 4.3L models
  • Emissions Certifications: Not for sale or use in California
Products specifications
Country of OriginUS
Sold AsEach
Drive2WD, 4WD
Youtube Video
Installation Time5-10 minutes
Installation Instructions
Proposition 65 Warnings

CALIFORNIA WARNING: Cancer and Reproductive Harm -

Write your own review Close Review Form
  • Only registered users can write reviews