{"product_id":"speedometer-calibrator-inline-chevy-gmc-2500hd-3500hd-17-19","title":"Speedometer Calibrator | Inline | Chevy\/GMC 2500HD\/3500HD (17-19)","description":"\u003cdiv\u003e\n\u003cp\u003e\nRough Country’s Speedometer Calibration Device is an inline, plug-and-play solution designed for Chevy\/GMC 2500HD and 3500HD trucks (2017–2019). If you’ve upgraded to larger tires or a lift, this device reprograms your speedometer and updates the ECM so your readings, shift points, and stability control stay accurate.\n\u003c\/p\u003e \u003cul\u003e\n\u003cli\u003e\n\u003cb\u003eCompatibility\u003c\/b\u003e: Inline speedometer calibrator designed for Chevy\/GMC 2500HD\/3500HD models from 2017–2019.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003ePlug-and-Play Installation\u003c\/b\u003e: Connects directly to the vehicle’s Diagnostic Link Connector Port with a straightforward setup that can be completed in just a few short hours.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eAccurate Calibration\u003c\/b\u003e: Reprograms the speedometer to match larger tires and updates the ECM to ensure the in-dash readout, transmission shift points, and electronic stability control reflect real-world performance.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eECM Update\u003c\/b\u003e: Goes beyond a display change by synchronizing the ECM with tire-size changes for true vehicle behavior and safety features.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eReset Function\u003c\/b\u003e: Includes a way to revert to stock speedometer settings for servicing, maintenance, or tire-size changes.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eWarranty\u003c\/b\u003e: Backed by a 1-year warranty for reliable, long-term use.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003e\nThis device addresses a common pain point for lifted or larger-tire GM trucks: a speedometer that no longer matches actual speed, which can affect speed reporting, shift timing, and stability systems. By calibrating the speedometer and updating the ECM, you’ll experience a truthful speed reading, more accurate shift points, and preserved electronic stability control. The reset feature adds flexibility for service or tire changes, while the plug-and-play design makes installation approachable for DIY enthusiasts. All of this comes with a reassuring 1-year warranty.\n\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Rough Country","offers":[{"title":"Default Title","offer_id":43645922574402,"sku":"DHTP_90005","price":199.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0663\/1499\/3730\/files\/red-inline_2.jpg?v=1776255770","url":"https:\/\/ninoautomotivestore.com\/products\/speedometer-calibrator-inline-chevy-gmc-2500hd-3500hd-17-19","provider":"Nino Automotive Store","version":"1.0","type":"link"}