Collection: 2015-2019 GMC Sierra 2500HD Tuners Modules Monitors

Every tuner, module, and monitor here is fitment-verified for the 2014-2018 GMC Sierra 2500HD. Calibrations match both the 6.6L Duramax and 6.0L Vortec gas V8, with options from Banks Power, SCT Performance, Bully Dog, and Pedal Commander.

Will a tuner hurt my Allison 1000 transmission? No -- the programmers stocked here include transmission-protecting calibrations that respect factory torque limits and actually firm up shifts under tow load.

If it is listed here, it fits your Sierra 2500HD -- guaranteed.