ProCal SNAP module for the 2019-2024 HD Ram (incl. 4500/5500) is a simple, cost effective calibration module that will accurately correct your speedometer after installing larger tires (up to 42" tall) and/or changing the axle/transfer case gear ratio, saving you from the headaches of going to the dealership or purchasing unnecessary equi...
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Did exactly what i needed. To access green plug pop the headlight panel off and its sits right behind that for easier access.
L
Lucas · May 3, 2026
Works exactly as advertised! Speedometer is spot on with 37’s and all functions work as they should. Highly recommend!
Will · March 2, 2026
Very easy to install, but i had a hard time getting it to work on my 2023 Ram 2500 diesel. Once it started working, worked like a charm. Was able to input my new tire size and iO could tell a difference right away. I would definitely recommend.