Get your 2017+ Chevrolet Silverado and GMC Sierra 2500/3500 6.6L Duramax ready for tuning by purchasing a brand-new E41 ECM from HP Tuners that's already upgraded for tuning and diagnostics.
HP Tuners 2017+ Chevrolet Silverado / GMC Sierra 2500/3500 6.6L Duramax L5P Modified ECM (Vin Req.)
HP Tuners L5P - Modified ECM Purchase
HP Tuners Engine Cntrl Module
Engine Control Module (ECM)
L5P - Modified ECM Purchase
Engine Cntrl Module
