Looking for aftermarket parts to modify or upgrade your 2019 GMC Sierra 3500 HD with programmers & tuners? At Tunersports.com we carry a huge selection of the top name brand performance programmers & tuner parts and accessories for your Sierra 3500 HD.
Whether you have a 2019 GMC Sierra 3500 HD in Base to SLT trim we have you covered. We have 5 programmers & tuners available to mod your Sierra 3500 HD. All parts have free shipping to the Continental US 48 States.
 IN STOCK 77-14003Silver Bullet throttle body spacers create turbulence in the air flow at the point just prior entry into the engine increasing horsepower, torque and improving throttle response and fuel efficiency. Silver Bullet throttle body spacers are constructed out of durable T-6061 billet aluminum and using ... aFe Power Sprint Booster Power Converter 07-17 GM Trucks V6/V8 (AT) 2007-2019 GMC Sierra 3500 HD SLE / SLT 2011-2019 GMC Sierra 3500 HD Denali 2015-2019 GMC Sierra 3500 HD Base $264.79 SALE |
 IN STOCK - LOW 66652Banks Power 17-19 Chevrolet/GMC 2500/3500 6.6L Gen 2 Diesel Derringer Tuner (Req iDash) 2017-2019 GMC Sierra 3500 HD Base / Denali / SLE / SLT $490.00 |
 IN STOCK 66692Stops the competition dead in their tracks. Six years of engine and chassis dyno experience developing and selling this engine for military use results in our torque and power gains across the full operating rpm range, starting right off idle and marching to the shift point in each gear. Derringer i... Banks Power 17-19 GM 2500 6.6L L5P Derringer Tuner (Gen 2) w/ 1.8in iDash 2017-2019 GMC Sierra 3500 HD Base / Denali / SLE / SLT $769.00 |
 IN STOCK 66793Stops the competition dead in their tracks. Six years of engine and chassis dyno experience developing and selling this engine for military use results in our torque and power gains across the full operating rpm range, starting right off idle and marching to the shift point in each gear. Derringer i... Banks Power 17-19 GM 2500 6.6L L5P Derringer Tuner (Gen 2) w/ 1.8in iDash DataMonster 2017-2019 GMC Sierra 3500 HD Base / Denali / SLE / SLT $889.00 |
 IN STOCK 1036627Easy to install; Faster engine warm-ups; Adjustable; Great to use for remote starters, PTO's and extended idling applications; 900/1200/1500/1800/2100 RPM... BD Diesel High Idle Control - 08-17 Chevrolet Duramax 6.6L 2008-2019 GMC Sierra 3500 HD SLE / SLT 2011-2019 GMC Sierra 3500 HD Denali 2015-2019 GMC Sierra 3500 HD Base $309.18 |