Speedometer Calibrator for Chevy/GMC 2500HD/3500HD Diesel (2017-2019)
- Fits 2017-2019 Chevrolet Silverado 2500 HD/3500 HD and GMC Sierra 2500 HD/3500 HD, 4WD or RWD
- Diesel models only — does not work on gas engines; not for sale or use in California
- Corrects speedometer, OE shift points, and stability control for larger tires; stock settings can be restored
- Locks to one vehicle once programmed until that vehicle is returned to stock
- Plug-in inline connection; downloadable installation guide available
- Warranty: 1 Year Limited Warranty. Shipping weight: 0.5 lb
The Trail Fortress check
Will it fit your truck?
✓ Fits
✕ Does not fit
- Gas models for gas models use Emissions Certifications: Not for sale or use in California
Download the latest software update here 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 kit
Speedometer Calibrator, fitment-checked
Rough Country 90005_A is an inline speedometer calibrator for 2017-2019 Chevrolet Silverado 2500 HD/3500 HD and GMC Sierra 2500 HD/3500 HD trucks in 4WD or RWD. It corrects speedometer readings after a larger tire swap and plugs in without cutting. Diesel models only — it will not work on gas trucks. Not for sale or use in California.
This inline speedometer calibrator for 2017-2019 Chevy and GMC 2500HD/3500HD diesel trucks plugs into the vehicle and resets the speedometer to read correctly on oversized tires, while also adjusting factory ECM shift points and recalibrating the electronic stability control to match the new tire size. Settings can be reverted to stock. The tool locks to the first truck it programs and cannot be moved to a second vehicle until the first is returned to stock. Fitment covers WT through High Country and Base through Denali trims. A downloadable installation guide is available. Warranty: 1 Year Limited Warranty.
What’s in the box
Kit contents
- 1× Speedometer Calibrator 90005
Rough Country shares subassemblies across kits, so individual package labels can carry broader application ranges. The complete 90005_A kit fits the vehicles shown in the fitment section above.
Specifications
Specs
| Brand | Rough Country |
| Part number | 90005_A |
| UPC / GTIN | 00843030171841 |
| Shipping weight | 0.5 lb |
| Warranty | 1 Year Limited Warranty |
| Country of origin | US |
| Category | Performance › Tuners & Monitors |
| Installation guide | Downloadable PDF |
Why buy here