2003 GMC Sierra Performance Chips
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- Bully Dog®GT Platinum™ ProgrammerGMC Sierra 2003, GT Platinum™ Programmer by Bully Dog®. The GT tuners unlock more horsepower and torque to meet the unique demands you put on your vehicle. With preloaded tuning, customizable gauges to track performance, and a wide...$469.00 - $594.99
- SCT Performance®BDX™ ProgrammerGMC Sierra 4.8L / 5.3L 2003, BDX™ Programmer by SCT Performance®. Precision in your performance has never been easier than with the BDX Performance Programmer. Access the latest preloaded tunes directly from the Cloud. Monitor engine...$419.00
- Banks®AutoMind 2™ Handheld ProgrammerGMC Sierra Non-Mexico Built 2003, AutoMind 2™ Handheld Programmer by Banks®. Wrap Your Hand Around Some Serious Power! Introducing the latest in pre-loaded, pre-programmed power from the most trusted name in engineered engine...$439.00
- Banks®Six-Gun™ Tuner with SwitchGMC Sierra 2500 HD / 3500 6.6L 2003, Six-Gun™ Tuner with Switch by Banks®. Gain up to +127 hp and +345lb-ft at rear wheels. Optimum fuel tuning for awesome power, built-in safety and adjust-on-the-fly power. Calibrated for sport,...$616.98
- Hypertech®Max Energy™ ProgrammerGMC Sierra 2003, Max Energy™ Programmer by Hypertech®. The Max Energy Programmer is one of the most full-function tuners on the market - providing high levels of power and economy for gasoline and diesel engines, with specific tuning...$437.72 - $452.36
- Hypertech®Speedometer CalibratorGMC Sierra 2003, Speedometer Calibrator by Hypertech®. The law requires accurate speedometer readings, even if you have non-stock tires or gear ratios installed. The Speedometer Calibrator is created to provide that specific function if...$279.95
- Bully Dog®BDX™ Handheld ProgrammerGMC Sierra 2003, BDX™ Handheld Programmer by Bully Dog®. Bully Dog’s new BDX™ hand-held performance tuner gives drivers the edge they need, whether tackling tough terrain, pulling a heavy payload or maximizing fuel economy on the...$399.00
- aFe®SCORCHER HD™ Tuner with SwitchGMC Sierra 6.6L 2003, SCORCHER HD™ Tuner with Switch by aFe®. A simple 30 minute install will give you a huge increase in power. The aFe POWER SCORCHER HD Module includes a high quality case & wire harness with factory style...$442.00
- PPE®Standard Xcelerator™ Handheld Programmer KitGMC Sierra 6.6L 2003, Standard Xcelerator™ Handheld Programmer Kit by PPE®. Power Level 1: 40 HP & 97 TQ. Power Level 2: 90 HP & 160 TQ. Power Level 3: 120 HP & 200 TQ. Power Level 4: 160 HP & 240 TQ. Power Level 5: 225 HP & 335 TQ....$449.99
- Banks®iDash 1.8 Super Gauge™ Monitor Upgrade KitGMC Sierra 6.6L 2003, iDash 1.8 Super Gauge™ Monitor Upgrade Kit by Banks®. Vehicle Monitoring like not other! — Banks iDash 1.8 Super Gauge opens a window into the vital inner workings of your vehicle, letting you see what’s...$299.00
- SCT Performance®X4™ Programmer Window MountUniversal X4™ Programmer Window Mount by SCT Performance®. Designed utilizing the latest technology, this X4 Window Mount by SCT Performance features premium quality and will perform better than advertised. Perfect for your vehicle...Right for your vehicle and lifestyleMade from high-quality materials for ultimate durability$25.00
- SCT Performance®BDX™ Programmer Magnetic Mount with Suction CupUniversal BDX™ Programmer Magnetic Mount with Suction Cup by SCT Performance®. SCT's Magnetic Windshield Mount is not your average device mount. The mount's heavy duty suction cup base securely adheres to windshield glass while 4...Right for your vehicle and lifestyleMade from high-quality materials for ultimate durability$25.00
- Bully Dog®OutLook™ GaugeGMC Sierra 6.6L 2003, OutLook™ Gauge by Bully Dog®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind. It will meet your needs and...$375.63
- Bully Dog®Super Agressive Shift Enhancer KitGMC Sierra 6.6L 2003, Super Agressive Shift Enhancer Kit by Bully Dog®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind. It will meet...High quality at an affordable priceExpertly made from premium materials$106.07
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