Looking for aftermarket parts to modify or upgrade your 2003 GMC Sierra 3500 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.
Whether you have a 2003 GMC Sierra 3500 in Base to SLT trim we have you covered. We have 8 programmers & tuners available to mod your Sierra 3500. All parts have free shipping to the Continental US 48 States.
 IN STOCK 66411Wrap Your Hand Around Some Serious Power! Introducing the latest in pre-loaded, pre-programmed power from the most trusted name in engineered engine efficiency. Banks is the only record-holding engine builder in the programming game, and now that expertise can be yours! The Banks AutoMind programmer... Banks Power 01-15 Chevy/GMC 6.6L Diesel/Gas AutoMind 2 Flash - Programming Module 2001-2006 GMC Sierra 3500 SLE / SLT 2002-2005 GMC Sierra 3500 Base $439.00 |
 SHIPS FROM MANUFACTURER 61409Advanced tuning for towing/work delivers better fuel economy under all load conditions, adjust-on-the-fly power and built-in safety. Plus flexible iDash vehicle command center. A real piece of work. EconoMind is built for work. With Banks PowerPack, you've got the goods to haul the goods! EconoMind ... Banks Power 01-04 Chevy/GMC 2500/3500 6.6L LB7 Economind Diesel Tuner w/ Banks iDash-1.8 2001-2004 GMC Sierra 3500 SLE / SLT 2002-2004 GMC Sierra 3500 Base $939.00 |
 SHIPS FROM MANUFACTURER 61439Advanced tuning for towing/work delivers better fuel economy under all load conditions, adjust-on-the-fly power and built-in safety. Plus flexible iDash vehicle command center. A real piece of work. EconoMind is built for work. With Banks PowerPack, you've got the goods to haul the goods! EconoMind ... Banks Power 01-04 Chevy/GMC 2500/3500 6.6L LB7 Economind Diesel Tuner w/ Banks iDash-1.8 DataMonster 2001-2004 GMC Sierra 3500 SLE / SLT 2002-2004 GMC Sierra 3500 Base $1,059.00 |
 SHIPS FROM MANUFACTURER 63765Calibrated for diesels that work and tow. Adds up to 100 hp/ 235 lb-ft with adjust on the fly power; built-in-safety; CleanTuner Technology and fuel economy features. All gains measured at rear wheels.... Banks Power 01-04 Chevy 6.6L Lb11 Economind - Powerpack w/ Switch 2001-2004 GMC Sierra 3500 SLE / SLT 2002-2004 GMC Sierra 3500 Base $739.00 |
 SHIPS FROM MANUFACTURER 61410Highest proven HP and torque for sport applications; adds up to 155 hp/ 385 lb-ft with adjust on the fly power; built-in safety and CleanTune Technology; plus flexible touch screen vehicle command center.... Banks 01-04 Chevy/GMC 2500/3500 6.6L LB7 Six-Gun Diesel Tuner w/ iDash-1.8 2001-2004 GMC Sierra 3500 SLE / SLT 2002-2004 GMC Sierra 3500 Base $934.00 |
 SHIPS FROM MANUFACTURER 61440Highest proven HP and torque for sport applications; adds up to 155 hp/ 385 lb-ft with adjust on the fly power; built-in safety and CleanTune Technology; plus flexible touch screen vehicle command center.... Banks 01-04 Chevy/GMC 2500/3500 6.6L LB7 Six-Gun Diesel Tuner w/ iDash-1.8 DataMonster 2001-2004 GMC Sierra 3500 SLE / SLT 2002-2004 GMC Sierra 3500 Base $1,059.00 |
 IN STOCK - LOW 63767Highest proven HP and torque for sport applications; adds up to 155 hp/ 385 lb-ft with adjust on the fly power; built-in safety and CleanTune Technology; plus flexible touch screen vehicle command center.... Banks Power 01-04 Chevy 6.6L Lb15 Six-Gun Diesel Tuner w/ Switch 2001-2004 GMC Sierra 3500 SLE / SLT 2002-2004 GMC Sierra 3500 Base $616.98 |
 IN STOCK 1036600Easy to install; Faster engine warm-ups; Adjustable; Great to use for remote starters, PTO's and extended idling applications; 2001-2004 LB7 800/1200/1800 RPM... BD Diesel High Idle Control - 2001-2004 Chev Duramax LB7 2001-2004 GMC Sierra 3500 SLE / SLT 2002-2004 GMC Sierra 3500 Base $61.41 |