Speedometer Calibrator for Chevy & GMC Trucks (2019–2023)
- Fits listed 2019–2023 Chevrolet and GMC applications — gas and diesel 1500 plus gas and diesel 2500/3500 models
- Does not fit 2022 Chevy/GMC refresh models; not for sale or use in California
- Corrects speedometer, ECM shift points, and stability control for larger tires; stock settings can be restored
- Standalone unit — not compatible with performance programmers, and locks to one vehicle at a time
- Plug-and-play connection, install time 5-10 minutes; downloadable installation guide available
- 1 Year Limited Warranty. Shipping weight: 0.85 lb
The Trail Fortress check
Will it fit your truck?
✓ Fits
+ 5 more applications
✕ Does not fit
- 2022 refresh models
- 2022 Chevy/GMC refresh models with the below frontend styles
Download the latest software update here. Emissions Certifications: Not for sale or use in California. This programmer is designed to function as a standalone unit and is NOT compatible with any type of performance programmer. Rough Country's Speedometer Calibrator can only be used with one vehicle at a time. As with all other programmers once programmed the programmer is locked to that vehicle and cannot be used with any other vehicles until the programmed vehicle is returned to stock settings. Fitment on this page is based on the manufacturer’s application data.
About this part
Speedometer Calibrator, fitment-checked
Rough Country 90045 is a plug-in speedometer calibrator for listed 2019–2023 Chevrolet and GMC trucks, including Colorado, Canyon, Silverado 1500, Sierra 1500, and 2500 HD applications. It corrects speedometer readings after a larger tire swap and can be returned to stock settings. Not for sale or use in California, and it does not fit 2022 Chevy/GMC refresh models.
This speedometer calibrator covers 2019–2023 Chevrolet and GMC trucks as listed in the fitment section, spanning gas and diesel 1500 models as well as gas and diesel 2500/3500 models. Beyond correcting speedometer readings for taller tires, it adjusts factory ECM shift points and recalibrates electronic stability control to suit the new tire size. It works as a standalone tool and is not compatible with performance programmers, and it locks to one vehicle until that vehicle is returned to stock. Check the exclusion list, then review the downloadable Rough Country installation guide before you plug in.
Specifications
Specs
| Brand | Rough Country |
| Part number | 90045 |
| UPC / GTIN | 00843030159559 |
| Shipping weight | 0.85 lb |
| Warranty | 1 Year Limited Warranty |
| Country of origin | US |
| Category | Performance › Tuners & Monitors |
| Installation guide | Downloadable PDF |
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