The GMC Sierra 3500 HD Speedometer Calibrator by Rough Country, designed for models from 2007 to 2016, ensures accurate speedometer readings when your vehicle is equipped with larger tires. This handy device reprograms your vehicle’s speedometer, rectifying any discrepancies arising from a change in tire size.

Delve deeper into the features of this remarkable speedometer calibrator, and you'll find a simple yet effective tool that connects directly to your vehicle’s Diagnostic Link Connector Port. Within minutes, it synchronizes your speedometer with the actual speed, providing precise readings. This device doesn't merely alter the dashboard display; it updates the vehicle’s ECM (Electronic Control Module) to ensure correct shift points and proper electronic stability control. It even reads and checks diagnostic codes, helping you manage issues like the “check engine light" and reset the speedometer to its original settings before servicing your vehicle.

Features

• Accurately resets the speedometer for larger tire sizes.
• Compatible with both gas and diesel models.
• Easy Plug and Play installation.
• Updates OE ECM Shift Points for larger tires.
• Recalibrates Electronic Stability Control.
• Diagnoses and reads codes like "check engine light".
• Option to revert to stock settings.
• Includes a 1-year warranty.
• Download latest software update as needed.

In conclusion, the Rough Country Speedometer Calibrator is an efficient, user-friendly device that helps maintain your vehicle's accuracy and performance when upgrading to larger tires. For any questions or assistance, feel free to reach out directly and speak with our support team at 512-982-9393 (Austin, Texas) or 562-981-6800 (Los Angeles, California). We offer comprehensive installation and customization services at both locations. Don’t hesitate to contact our experts today to ensure your vehicle operates at its best!

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