The GMC Sierra 1500 Speedometer Calibrator by Rough Country, compatible with models from 2007 to 2018, is the perfect tool for ensuring your speedometer reads accurately after upsizing your vehicle's tires. This essential device helps correct the discrepancy in speed readings when larger tires are added, allowing for more precise driving and vehicle operation.

When you upgrade to larger tires, the factory settings on your Sierra 1500's computer can lead to inaccurate speedometer readings. The Rough Country Speedometer Calibrator addresses this problem head-on. With its plug-and-play application, it easily connects to your vehicle's Diagnostic Link Connector Port, updating the ECM to provide accurate speed readouts. Unlike other calibrators, this device also adjusts the vehicle's ECM to ensure correct shift points and proper operation of electronic stability control systems, which are critical for safety on the road.

Features

• Accurately resets speedometer readings for larger tires.
• Suitable for both gasoline and diesel models.
• Simple plug-and-play setup for quick connection.
• Updates OE ECM shift points for compatibility with larger tires.
• Adjusts Electronic Stability Control for expanded tire sizes.
• Reads and clears diagnostic codes like "check engine light."
• Option to revert to stock settings before servicing.
• 1-year warranty included.

This user-friendly calibrator not only helps with speedometer accuracy but also allows you to read and manage diagnostic codes, keeping your vehicle in optimal condition. Please note, this device is not suitable for 2007-2013 4.3L models and isn't compatible with performance programmers or for use in California due to emissions certifications. The calibrator locks to one vehicle until returned to stock settings.

If you have any questions or need more information about the GMC Sierra 1500 Speedometer Calibrator or installation services, feel free to give us a call at 512-982-9393 in Austin, Texas, or 562-981-6800 in Los Angeles, California. We offer comprehensive installation and customization services at both of our locations to ensure your vehicle performs at its best with your new upgrades.

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