Looking for aftermarket parts to modify or upgrade your 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 2007 or 2024 GMC Sierra 3500 HD in AT4 to WT trim we have you covered. We have 28 programmers & tuners available to mod your Sierra 3500 HD. All parts have free shipping to the Continental US 48 States.
 SHIPS FROM MANUFACTURER 61463Banks SpeedBrake is a revolutionary; patented all-electronic braking system with downhill speed regulating capability; user adjustable setpoint speeds and built in safety features.... Banks Power 07-10 Chevy 6.6L LMM Banks Speedbrake (w/ iDash 1.8 DataMonster) 2007-2010 GMC Sierra 3500 HD SLE / SLT / WT $1,059.00 |
 IN STOCK 1036606Easy to install; Faster engine warm-ups; Adjustable; Great to use for remote starters, PTO's and extended idling applications; 2006-2007 LBZ 800/1250/1700 RPM... BD Diesel High Idle Control - 2006-2007 Chevrolet Duramax LBZ 2007-2007 GMC Sierra 3500 HD SLE / SLT / WT $61.41 |
 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 2008-2014 GMC Sierra 3500 HD WT 2008-2019 GMC Sierra 3500 HD SLE / SLT 2011-2019 GMC Sierra 3500 HD Denali 2015-2019 GMC Sierra 3500 HD Base $309.18 |