The GMC Sierra 3500 HD Speedometer Calibrator by Rough Country is an essential tool for anyone who has upgraded their vehicle with larger tires. This user-friendly inline calibrator ensures your speedometer reads accurately, reflecting the true speed of your vehicle.

This innovative device assists you in seamlessly recalibrating your vehicle’s speedometer to account for the installation of larger tires, an adjustment necessary when the factory setting no longer provides an accurate speed reading. Unlike other tools that merely adjust the dashboard display, the Rough Country Speedometer Calibrator performs an in-depth update of your vehicle’s Engine Control Module (ECM), which also supports the correct shift points and electronic stability control adjustments. With a simple plug and play connection to your vehicle’s Diagnostic Link Connector Port, the calibration process is quick and efficient. You’ll find this a more affordable and straightforward option than many others on the market.

Features

• Resets speedometer for accurate readings with larger tires.
• Quick and easy Plug and Play connection.
• Updates OE ECM Shift Points to accommodate larger tires.
• Recalibrates Electronic Stability Control for larger tires.
• Option to return to stock settings when required.
• 1-year warranty included.

With the GMC Sierra 3500 HD Speedometer Calibrator, you can rest assured that your speed readings and component functionalities remain precise after upgrading your tires. For additional information or if you have any questions, feel free to call us at 512-982-9393 for our Austin, Texas location or 562-981-6800 for our Los Angeles, California area location. We also offer professional installation and customization services at both locations to help you get the most out of your upgraded vehicle.

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