The GMC Sierra 2500 HD Speedometer Calibrator by Rough Country is the perfect tool for adjusting your vehicle's speedometer to align with the enhanced performance of larger tires. Designed for models from 2007 to 2016, this device ensures your speedometer accurately reflects your vehicle’s true speed, even after a tire upgrade.

Installing larger tires on your GMC Sierra 2500 HD can offer improved performance and robust aesthetics, but it can also lead to mismatched speedometer readings. Rough Country's Speedometer Calibrator solves this issue by recalibrating your vehicle’s speedometer to display accurate speeds that match the newly installed tires. This user-friendly device connects seamlessly to your vehicle’s Diagnostic Link Connector Port, making installation a breeze. In just a few minutes, your vehicle will record precise speed readings, while the device updates your vehicle’s ECM to ensure correct shift points and electronic stability control adjustments. Furthermore, the calibrator reads and manages diagnostic codes, helping to address those pestering "check engine light" warnings, and offers the convenient option to reset to stock settings prior to vehicle servicing.

Features

• Resets your speedometer to accurate readings for larger tires.
• Applicable to gas & diesel models.
• Easy Plug and Play connection.
• Updates OE ECM Shift Points for larger tires.
• Recalibrates Electronic Stability Control.
• Reads diagnostic codes such as "check engine light".
• Option to revert to stock settings.
• 1-year warranty.
• Downloadable latest software updates.

If you drive a GMC Sierra 2500 HD from 2007 to 2016, this speedometer calibrator is an essential tool to maintain the excellent performance of your truck. Please note, it is not compatible with 07-13 4.3L models or any performance programmer, and is not available for purchase or use in California due to emissions regulations. Each calibrator is locked to one vehicle, ensuring a focused and optimized performance.

Have questions or need assistance with installation? Our experts are here to help. Call us at 512-982-9393 for our Austin, Texas location or 562-981-6800 in the Los Angeles, California area. We offer installation and customization services at both locations, so don't hesitate to get in touch with our experienced team to make sure your vehicle is performing at its best.

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