Review on π Speedometer Calibrator for 2019-2020 Chevy Silverado, GMC Sierra 1500 & 2020 2500HD | Rough Country Code Reader 90045 by Reggie Higdem
Works great: Spares
Download the application to your computer from the Rough Country website, plug in the module and update by following the simple instructions. Tire size varies slightly from manufacturer to manufacturer. So when I used the previous size/current size, the speedometer now read about 1 mph at 60 mph. Removed the module and plugged into the PC and used the previous altitude/new altitude option and now the speedometer reads exactly like my Waze app at all speeds. Truck straps back, or your key fob isn't working. I had to use the key in the door and reconnect the wiring harness to disarm the car alarm (the system thought I was hacking).
- Speedometer
- Functionality
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