2003 GMC Sierra Performance Chips
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JET®Dynamic Spectrum TunerGMC Sierra 2003, Dynamic Spectrum Tuner by JET®. Designed for the professional tuner who wants total control of the vehicle’s programming, the JET Dynamic Spectrum Tuner is a powerful tuning tool. JET’s DST software provides you...$399.99 - JET®Performance ModuleGMC Sierra 2003, Performance Module by JET®. Dynamic Spectrum Tuning provides power gains across the entire power band-not just at full throttle. Point by point air/fuel ratio, ignition advance and various other tuning points provide...Provide Horse Powers Performance GainEasily Installed In Less Than 30 Minutes$259.46 - $266.21
- JET®Performance ProgrammerGMC Sierra 2003, Performance Programmer by JET®. The JET Performance Programmer lets you take control and program your own vehicle computer to match your driving style. JET's exclusive Tri-Power tuning allows you to program for...$337.49
- ATS Diesel Performance®Atomizer™ Power ModuleGMC Sierra 6.6L 2003, Atomizer™ Power Module by ATS Diesel Performance®. The ATS Atomizer controls engine fuel rail pressures in order to maintain an optimal volume of fuel to the injectors. By doing this, the fuel droplets are...$554.90
- ATI Performance®PCS Simple Shift™ Handheld Tuner with CableGMC Sierra 4-Speed 4L80-E Transmission 2003, PCS Simple Shift™ Handheld Tuner with Cable by ATI Performance®. Get this top-of-the-line product thoroughly engineered to boost performance and unlock the full potential of your vehicle....Designed for enhanced engine performanceOffers excellent fuel economy$398.83
- Accel®SuperTuner™ TunerGMC Sierra 2003, SuperTuner™ Tuner by Accel®. ACCEL's all-new SuperTuners boost power across your engine's entire rpm range. These revolutionary handheld tuners quickly and easily reprogram your vehicle for better all-around...$369.95
- DiabloSport®Predator 2 Platinum™ TunerGMC Sierra 2003, Predator 2 Platinum™ Tuner by DiabloSport®. The Predator 2 Platinum is the perfect tuning solution for vehicles that plan to add future upgrades or have already upgraded with aftermarket performance parts. The P2...$403.95
- DiabloSport®Predator 2™ TunerGMC Sierra 2003, Predator 2™ Tuner by DiabloSport®. The legendary Predator Performance Tuner has made a return! For 10 years, the Predator was known as one of the most rock solid performance tuners ever made, and now it's back with a...$389.95 - $403.95
- DiabloSport®Trinity 2 EX Platinum™ ProgrammerGMC Sierra 2003, Trinity 2 EX Platinum™ Programmer by DiabloSport®. The Trinity 2 EX is hands down, the most feature-packed performance tuner, monitor, diagnostic, and data logging device on the planet. The T2 has no peer in terms of...$696.95
- DiabloSport®Trinity 2 EX™ ProgrammerGMC Sierra without E-Assist 2003, Trinity 2 EX™ Programmer by DiabloSport®. The Trinity 2 EX is hands down, the most feature packed performance tuner, monitor, diagnostic and data logging device on the planet. The T2 has no peer in...$696.95
- DiabloSport®inTune i3 Platinum™ ProgrammerGMC Sierra 2003, inTune i3 Platinum™ Programmer by DiabloSport®. The Platinum i3 is designed for those who want the best of both worlds, pre-loaded, high-performance tunes in addition to custom tuning capability. While DiabloSport...$419.95
- DiabloSport®inTune i3™ ProgrammerGMC Sierra 2003, inTune i3™ Programmer by DiabloSport®. DiabloSport’s 3rd generation inTune, the “i3”, brings the same great power, features, and application coverage that has established the brand as a “must-have” for...$419.95
- Edge®EvoHT2™ ProgrammerGMC Sierra 2003, EvoHT2™ Programmer by Edge®. The EvoHT is a premium hand-held performance tuner from Edge Products. The EvoHT was developed specifically to give you the most power at the best price, with industry leading service and...$482.95
- Edge®Evolution CS2™ ProgrammerGMC Sierra 2003, Evolution CS2™ Programmer by Edge®. Edge’s Evolution CS2 is a crowd favorite so why “fix something if it isn’t broken?” The Evolution CS2 is the sleekest in-cab monitor and programmer in the market. If...$499.95
- Edge®Evolution CTS3™ ProgrammerGMC Sierra 2003, Evolution CTS3™ Programmer by Edge®. Introducing the next generation Evolution CTS3: all-new, full-Color Touch Screen CTS3. The CTS3 will continue to include all of the great features, benefits, and extended...$614.95 - $745.95
- Edge®Juice with Attitude CS2™ ProgrammerGMC Sierra 6.6L 2003, Juice with Attitude CS2™ Programmer by Edge®. Power Level 1: 40 hp & 150 lb-ft. Power Level 2: 60 hp & 180 lb-ft. Power Level 3: 75 hp & 200 lb-ft. Power Level 4: 90 hp & 250 lb-ft. Power Level 5: 125 hp & 325...$1,085.69
- Edge®Juice with Attitude CTS3™ Programmer KitGMC Sierra 6.6L 2003, Juice with Attitude CTS3™ Programmer Kit by Edge®. The Juice with Attitude is Edge’s most advanced product line. The Juice controls your truck's injection timing and duration to deliver maximum performance and...$1,102.95
- Superchips®Dashpaq+™ Programmer KitGMC Sierra 2003, Dashpaq+™ Programmer Kit by Superchips®. Power and cutting-edge features are now available at your fingertips for your vehicle with the Dashpaq+. Take your vehicle to the next level with impressive pre-loaded tunes....$596.95 - $649.95
- Superchips®Dashpaq™ Tuner KitGMC Sierra 2003, Dashpaq™ Tuner Kit by Superchips®. This dual purpose product delivers big power and also provides an in-cab monitor to keep an eye on critical engine parameters like coolant temp, transmission temp, battery voltage...$578.95 - $642.95
- Superchips®Flashpaq F5™ TunerGMC Sierra 2003, Flashpaq F5™ Tuner by Superchips®. Introducing the all-new Flashpaq F5 performance tuner from Superchips. With it’s new, easy-to-use graphic interface, high-resolution color screen, scan features, and tuning levels,...$399.95
- Banks®iDash 1.8 DataMonster™ Monitor Upgrade KitGMC Sierra 6.6L 2003, iDash 1.8 DataMonster™ Monitor Upgrade Kit by Banks®. Banks iDash is the smallest, most powerful plug-n-play monitor and control interface on the market. With its easy to read 2- to 8-gauge user selectable LCD...$425.00
- DiabloSport®Trinity 2 MX™ MonitorGMC Sierra 4.8L / 5.3L / 6.0L / 8.1L Gas 2003, Trinity 2 MX™ Monitor by DiabloSport®. The Trinity 2 MX is the most advanced digital gauge solution on the market. An eye-catching, 5" capacitive-touch screen gives you the sharpest...$520.95
- Edge®Insight CS2™ MonitorGMC Sierra 2003, Insight CS2™ Monitor by Edge®. Specially created to provide the ultimate level of vehicle, the CS2 monitor plugs in to any OBD II compatible vehicle port. Fault codes and check engine lights can be diagnosed and...$317.15
- Edge®Insight CTS3™ Digital Gauge MonitorGMC Sierra 2003, Insight CTS3™ Digital Gauge Monitor by Edge®. Insight is the #1 preferred digital gauge monitor in the market today, used by daily drivers and enthusiasts everywhere. Engineered to be the most comprehensive,...$462.95
- Superchips®Flashcal F5™ Calibration ToolGMC Sierra 2003, Flashcal F5™ Calibration Tool by Superchips®. If you are a truck owner who is looking for a device to help calibrate for your large aftermarket tires, read/clear trouble codes, adjust your speed limiter and more, then...$238.95
- ATI Performance®PCS Simple Shift™ Transmission ControllerGMC Sierra 2003, PCS Simple Shift™ Transmission Controller by ATI Performance®. Simple Shift is the latest breakthrough in electronic overdrive transmission control. No laptops or hand-held tuning devices are required to completely...$179.49 - $941.26
- ATI Performance®PCS™ Automatic Transmission ControllerGMC Sierra 2003, PCS™ Automatic Transmission Controller by ATI Performance®. The Powertrain Control Solutions, LLC. Universal Automatic Transmission Controller is a fully programmable transmission control system. Through a friendly PC...Upshift/Downshift button capability (Paddle shifting and Button shifting)Selectable shifting modes (ex. Power, towing, economy)$226.26 - $1,086.29
- JET®Speedometer CalibratorGMC Sierra 2003, Speedometer Calibrator by JET®. JET Performance Accu-Speed interacts with the vehicle speed sensor on late model GM, Ford, Dodge, and Jeep trucks and SUVs. It connects to the transmission to allow shift point adjustment...Designed to modify speed sensor output readingsConnects to the transmission output speed sensor$179.96
- ATS Diesel Performance®Co-Pilot™ Look-Up Transmission Controller KitGMC Sierra 2003, Co-Pilot™ Look-Up Transmission Controller Kit by ATS Diesel Performance®. Converting your GM Duramax with the Allison transmission from a 5 speed to a 6 speed will lower rpms going down the highway and will allow for...$617.50 - $1,317.18
- Fast®TCI EZ-TCU™ Overdrive Transmission Controller KitGMC Sierra 2003, TCI EZ-TCU™ Overdrive Transmission Controller Kit by Fast®. Includes: Trans Control Unit, Hand-Held Display, OEM-Quality Wiring Harness. Easy Electronic Overdrive Transmission Control for computer controlled...$765.95
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