Introducing the GMC Sierra 2500 HD Speedometer Calibrator by Rough Country - a precision tool designed for diesel models from 2017-2019. This device ensures your speedometer remains accurate when outfitting your vehicle with larger tires, providing a seamless driving experience.

The Rough Country Inline Speedometer Calibrator is perfect for those looking to recalibrate their speedometer after upgrading to larger tires. Many drivers face discrepancies between their actual speed and what their speedometer reads, leading to potential road mishaps and inaccurate vehicle data. This intuitive device plugs directly into your vehicle’s Diagnostic Link Connector Port. In just a few minutes, it updates your vehicle's Electronic Control Module (ECM), guaranteeing not just correct speed readings, but also maintaining accurate shift points and electronic stability control. This means your driving experience remains smooth and efficient, as if you were using stock tires.

Features

• Restores speedometer accuracy for vehicles with larger tires.
• Easy plug-and-play connection that updates OE ECM shift points.
• Supports recalibrating electronic stability control for large tires.
• Option to revert settings back to stock for servicing.
• 1-year warranty for peace of mind.

This device is exclusively for diesel models from 2017 to 2019 and cannot be used with gas models. Also, note that each calibrator can only be used with one vehicle at a time, and it will lock onto that vehicle until the settings are reverted to stock. Unfortunately, this product is not emissions-certified for sale or use in California.

If you have any questions, feel free to contact our expert team at 512-982-9393 for our Texas location or 562-981-6800 for our California location. We proudly offer installation and customization services at our Austin, Texas, and Los Angeles, California, locations. Let us assist you in optimizing your driving experience with Rough Country’s reliable products.

CA Residents: WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov