2003 Silverado Performance Chips & Programmers

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    • Superchips® Cortex Programmer
      (8 reviews)
      # 51930035
      Chevy Silverado 2003 Cortex Programmer by Superchips®. This hand-held diagnostic programmer connects with any OBD II compatible diesel or gasoline vehicle to adjust levels of horsepower and torque best suited to racing, towing,...
      $379.99
    • Superchips® Flashpaq Tuner
      (2 reviews)
      # 51930036
      Chevy Silverado 2003 Flashpaq Tuner by Superchips®. This compact diagnostic programmer connects with any OBD II compatible vehicle to adjust levels of horsepower and torque most beneficial to towing, racing, fuel economy, or...
      $349.00
    • Bully Dog® GT Platinum Programmer
      (4 reviews)
      # 59919286
      Chevy Silverado MFI 2003, GT Platinum Programmer by Bully Dog®. The GT Platinum is four products in one: a vehicle engine tuner, monitor, gauge and diagnostic device all in a single unit. The GT dramatically improves the utility of...
      Four products in one remarkable unitInstallation is extremely easy and takes no more than 20 minutes
      $429.00 - $594.99
    • Edge® Juice with Attitude CS / CTS Programmer
      (0 reviews)
      # 1342105
      Chevy Silverado Diesel 1 Engine VIN code LB7 Engine 2003, Juice with Attitude CS / CTS Programmer by Edge®. Comes with in-vehicle screen and separate module that connects directly to factory sensors underhood to provide racetrack...
      CS and CTS offer enhancements specifically designed for boosting fuel economy, towing, and performance levels of non-modified, factory-spec vehiclesAlso offers two to three additional levels of extreme performance enhancements for use only with strengthened drivetrains and engine components
      $979.00
    • Edge® Evolution CS / CTS Programmer
      (6 reviews)
      # 26926262
      Chevy Silverado 2003, Evolution CS / CTS Programmer by Edge®. Providing the ultimate level of vehicle instrumentation along with 4 levels of performance enhancement, the compact CS and wide-screen CTS programmers plug in to any OBD...
      Offers performance-enhancing software revisions designed specifically for fuel economy, towing, semi-aggressive performance, and aggressive performanceCS features compact size, manual control buttons on left and 2.4" color screen
      $589.00 - $649.00
    • Edge® Evolution HT Programmer
      (0 reviews)
      # 49776445
      Chevy Silverado 2003, Evolution HT Programmer by Edge®. This compact, hand-held programmer connects to your truck’s OBD II port and remaps ECU software to increase horsepower and torque for towing or high performance driving, or...
      Available in Gasoline- or Diesel-specific applicationsPrograms your vehicle’s engine control computer to let you increase power for maximum performance on the street, or while towing
      $369.00
    • DiabloSport® Trinity Programmer
      (6 reviews)
      # 53057277
      Chevy Silverado 2003, Trinity Programmer by DiabloSport®. This hi-res color screen programmer plugs in to any vehicle’s OBD II port to remap ECU operation for increased power and mileage. The screen displays a wealth of vehicle...
      Windshield suction cup mounting bracket includedFeatures performance enhancing levels custom tuned for Economy, Performance, Towing, and Extreme Performance for modified vehicles
      $599.00
    • DiabloSport® inTune Programmer
      (6 reviews)
      # 53057274
      Chevy Silverado 2003, inTune Programmer by DiabloSport®. With dimensions smaller than most smart phones, this full-function programmer plugs in to any vehicle’s OBD II port to remap ECU operation for increased power and mileage....
      Features performance enhancing levels custom tuned for Economy, Performance, Towing, and Extreme Performance for modified vehiclesAlso features performance enhancement programs designed specifically for aftermarket cold air intakes, MAF sensor upgrades, and custom-sized supercharger pulley wheels
      $389.00
    • SCT Performance® iTSX / TSX for Android Wireless Programmer
      (1 reviews)
      # 15803471
      Chevy Silverado 2003, iTSX / TSX for Android Wireless Programmer by SCT Performance®. Recalibrate your vehicle’s computer for better performance with the iTSX/TSX Wireless Programmer. It comes pre-loaded with performance tune...
      Recalibrates your vehicle’s computer to maximize performance, develop more power and torque, and increase fuel mileageArrives pre-loaded with dyno-proven tune files
      $469.00
    • Banks® AutoMind™ Programmer
      (0 reviews)
      # 26050701
      Chevy Silverado 2003, AutoMind™ Programmer by Banks®. The Banks AutoMind programmer lets you reprogram your vehicle’s engine controller. Features include multiple programs, OBD-II support, and OBD-II code-clearing capability.
      $368.68
    • Banks® iQ Flash
      (0 reviews)
      # 46296932
      Chevy Silverado 2003, iQ Flash by Banks®. Take complete control of all added power and safety functions when you connect the Banks iQ Flash to any Banks diesel tuner, AutoMind Flash Programming Module, SpeedBrake, or other...
      5.0” (diagonal) widescreenFingerprint resistant oleophobic coating
      $575.77 - $741.88
    • Banks® Six-Gun™ Diesel Tuner Performance Module
      (0 reviews)
      # 46296927
      Chevy Silverado Diesel LB7 Engine 2003, Six-Gun™ Diesel Tuner Performance Module by Banks®. The Banks Six-Gun diesel tuner can add as much as 155 hp/385 ft.-lbs. to your rear-wheel horsepower safely, for major improvements in...
      Airflow upgrades recommended to achieve claimed powerPlug-and-play install in an hour or two
      $616.97 - $1,130.94
    • Hypertech® HyperPAC Programmer
      (0 reviews)
      # 62681902
      Chevy Silverado 2003, HyperPAC Programmer by Hypertech®. The HyperPAC, Hypertech’s Performance Automotive Computer, allows you to power tune your vehicle for more horsepower and torque, perform runs just like you’re at the drag...
      Performance tuningDrag Strip
      $345.55 - $634.84
    • JET® Dynamic Spectrum Tuner
      (0 reviews)
      # 13551149
      Chevy Silverado 2003, Dynamic Spectrum Tuner by JET®. Designed for the performance enthusiast who wants total control of their vehicle's programming, the JET Dynamic Spectrum Tuner is a powerful tuning package. JET’s DST software...
      Fuel parameters including power enrichment and volumetric efficiencyIgnition tables including spark advance versus load, knock retard and more
      $311.72 - $456.36
    • JET® EZ-Tune Programmer
      (0 reviews)
      # 61246977
      Chevy Silverado 2003, EZ-Tune Programmer by JET®. Change Engine Tuning. Read and Clear Diagnostic Codes. EZ Tune Programmer is the economy version of the full Performance Programmer and is designed for the driver who only wants to...
      User friendly programming procedureRead and clear factory diagnostic trouble codes (turn off check engine light)
      $218.17
    • JET® Performance Programmer
      (0 reviews)
      # 61246973
      Chevy Silverado 2003, Performance Programmer by JET®. Shift Points/Firmness. Modified Ignition Curve. Recalibrated Air/Fuel Ratio. The JET Performance Programmer lets you take control and program your own vehicle computer to match...
      Add up to 100 horsepower & 168 ft/lbs of torque instantlyTri-Power performance tuning modes for regular, midgrade or premium fuels-Diesel models feature 5 different performance levels from 30 HP to 100 HP
      $280.54
    • COMP Cams® Computer Chip Programmer
      (0 reviews)
      # 14591890
      Chevy Silverado 2003, Computer Chip Programmer by COMP Cams®. Fast-Flash™ Power Programmer. FAST-FLASH™ hand held programmer is the most versatile computer tuning tool on the market today. Developed to permit tuning for your...
      Select From Performance/Towing/Economy ModeOptimize Engine Parameters
      $350.83
    • Superchips® VIVID LINQ Performance Chip
      (1 reviews)
      # 51741781
      Chevy Silverado 1500 4.8L / 5.3L / 6.0L 2003 VIVID LINQ Performance Chip by Superchips®. This controller unit for your gasoline-powered vehicle offers all VIVID Paq functions, but without the tablet screen. Connects to most...
      $349.99
    • DiabloSport® Extreme Power Puck Module
      (0 reviews)
      # 53057165
      Chevy Silverado Diesel 6.6L Duramax LB7 2003, Extreme Power Puck Module by DiabloSport®. HP Gain: 100. TQ Gain: 150. Designed specifically for diesel engines, this under hood controller remaps fuel injection and timing to boost...
      Installs under hood easily with pre-fitted connectors, and requires no special toolsBoosts fuel economy by up to 4 miles per gallon under normal highway driving conditions
      $291.80
    • Banks® EconoMind™ Stinger Performance Module
      (0 reviews)
      # 3144655
      Chevy Silverado Diesel 2003, EconoMind™ Stinger Performance Module by Banks®, Banks iQ® Man-Machine Interface, HP Gain: Up To 155 hp, TQ Gain: Up To 385. EconoMind Stinger Diesel Tuner with 6-position switch controller....
      $1,130.94
    • Banks® EconoMind™ Stinger Performance Module
      (0 reviews)
      # 46296202
      Chevy Silverado Diesel LB7 Engine 2003, EconoMind™ Stinger Performance Module by Banks®. Includes Switch. The Banks EconoMind tuner has it all: More power, better fuel economy, and improved emissions. By tinkering with injector...
      $713.58
    • Banks® EconoMind™ PowerPack Performance Module
      (0 reviews)
      # 46296922
      Chevy Silverado Diesel LB7 Engine 2003, EconoMind™ PowerPack Performance Module by Banks®. HP Gain: Up To 100 hp, TQ Gain: Up To 230. The Banks EconoMind tuner has it all: More power, better fuel economy, and improved emissions....
      6-position-switch controllerAlso controlled by Banks iQ controller
      $713.58 - $1,130.94
    • Banks® Bullet™ Performance Module
      (0 reviews)
      # 3144511
      Chevy Silverado DIESEL 2003, Bullet™ Performance Module by Banks®. Improve your diesel’s power by 30 or 60 hp, and 50 or 100 lbs.-ft. by adding the Bullet. By piggybacking on the engine’s PCM controller and adding fuel when...
      30 hp bump in Tow mode60 hp bump in Sport mode
      $307.97 - $366.52
    • JET® Power Control Module
      (1 reviews)
      # 13551155
      Chevy Silverado 2003, Power Control 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...
      Provide Performance Gains Up To 25 Horse PowerEasily Installed In Less Than 30 Minutes
      $201.96 - $208.19
    • Hypertech® Max Energy Programmer
      (1 reviews)
      # 1683097
      Chevy Silverado GAS 2003, Max Energy Programmer by Hypertech®. The Max Energy Programmer series provides high levels of power and economy for gasoline engines, with specific tuning applications geared for regular unleaded gasoline...
      Designed specifically for gasoline enginesRead, display, and clear diagnostic trouble codes and check engine lights
      $329.99
    • Edge® Insight CS / CTS Monitor
      (3 reviews)
      # 49776448
      Chevy Silverado 2003, Insight CS / CTS Monitor by Edge®. Specially created to provide the ultimate level of vehicle instrumentation, the compact CS and wide-screen CTS monitors plug in to any OBD II compatible vehicle port. Fault...
      CS and CTS are monitors only and do NOT enhance engine performanceCS features compact size, manual control buttons on left and 2.4" color screen
      $299.00 - $399.00
    • Edge® Attitude CS / CTS Upgrade Kit
      (0 reviews)
      # 49776435
      Chevy Silverado Diesel 1 Engine VIN code LB7 Engine 2003, Attitude CS / CTS Upgrade Kit by Edge®. This Attitude Upgrade Kit is designed to allow owners of original Juice with Attitude programmers to upgrade their in-cabin monitors...
      Replaces original Attitude monitor with a stylish CS 2.4" color screen or CTS 4.3" color touch screen monitorCS and CTS monitors mount inside to the windshield by suction cups for display and control functions
      $349.00 - $429.00
    • Banks® iQ™ PowerPDA Replacement System
      (0 reviews)
      # 46296198
      Chevy Silverado Diesel LB7 Engine 2003, iQ™ PowerPDA Replacement System by Banks®. With PDA Docking Station. Take complete control of all added power and safety functions when you connect the Banks iQ Flash to any Banks diesel...
      5.0” (diagonal) widescreenFingerprint resistant oleophobic coating
      $527.29
    • JET® Speedo Pro Programmer
      (0 reviews)
      # 61246978
      Chevy Silverado 2003, Speedo Pro Programmer by JET®. Change Engine Tuning. Read and Clear Diagnostic Codes. The Speedo Pro Programmer is designed for the driver who has changed tire size or gear ratios, or both, and wants to...
      Clear any engine diagnostic codesCorrect the speedometer and automatic shift points
      $180.76
    • Hypertech® Speedometer Calibrator
      (0 reviews)
      # 62681905
      Chevy Silverado 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...
      Designed for any OBD II compatible gasoline or diesel powered vehiclePrograms vehicle ECU to correctly calculate and display speedometer and odometer readings when non-stock size tires are equipped on vehicle
      $229.99 - $311.39
    • JET® Speedometer Calibrator
      (0 reviews)
      # 13551142
      Chevy Silverado Automatic Transmission 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...
      Designed to modify speed sensor output readingsConnects to the transmission output speed sensor
      $124.65
    • Bully Dog® RAM Mirror-Mate™ Mounting Kit for PMT
      (0 reviews)
      # 1393202
      Chevy Silverado 2003, RAM Mirror-Mate™ Mounting Kit for PMT by Bully Dog®. Adds a Ram-Mount ball mount between the OEM mirror and the mirror button glued to the windshield glass. Does not affect location or function of mirror....
      Adds Ram-Mount to OEM mirror button on glassEasy install, one set screw to loosen
      $39.51
    • Actron® AutoScanner Plus
      (3 reviews)
      # 16549449
      AutoScanner Plus by Actron®. The Enhanced Actron CP9580A AutoScanner Plus OBD II, CAN and ABS Scan Tool is the ultimate choice in handheld automotive diagnostic scan tools. It is suitable both for advanced automotive...
      With CodeConnect quickly pinpoint and prioritize the solution and not just the code providing over 4.3 million verified fixes specific to the vehicle's make model year and engineCompatible with OBD-II and CAN vehicles 1996 and newer and includes expanded Asian and ABS code coverage record and playback data stream and on screen graphing; also compatible with trilingual
      $239.80
    • Actron® Autoscanner
      (2 reviews)
      # 15890986
      Autoscanner by Actron®. Get Professional Grade scan tool features at a code reader price. Now, more affordable than ever for LIVE data. Live Data allows the user to view vehicle sensor, switch and relay inputs in real time, while...
      Convenient size, can operate with one handDiagnose and maintain vehicle
      $137.74
    • Actron® Code Scanner
      (1 reviews)
      # 15891015
      Chevy Silverado 2003, Code Scanner by Actron®. This GM code scanner retrieves engine trouble codes from the on-board diagnostics computer and relays them to you via the dashboard "check engine" lights. The software, PC interface...
      Retrieves engine trouble codes from the on-board diagnostics (OBD) computerRetrieves ABS trouble codes from the on-board diagnostics (OBD) computer
      $31.55
    • Actron® Code Scanner
      (1 reviews)
      # 15891009
      Ford Code Scanner by Actron®. This Ford code scanner accesses Ford's self-test system, retrieves engine trouble codes from the on-board diagnostics computer, and uses audio and visual indicators for reading the codes. This code...
      Compatible with OBD I 1981 - 1995 Ford & Lincoln-Mercury (PDF) vehiclesRetrieves engine trouble codes from the on-board diagnostics (OBD) computer
      $31.55
    • Actron® Elite AutoScanner
      (1 reviews)
      # 16549446
      Elite AutoScanner by Actron®. Trilingual OBD II Enhanced CAN Scan Tool, optional OBD I. CP9185 Elite AutoScanner offers DIYers and technicians the features they asked for.
      OBD II enhanced codes (1996 and newer)DTC Lookup Services for further help
      $290.84 - $349.16
    • Actron® Pocketscan Code Reader
      (0 reviews)
      # 15891033
      Pocketscan Code Reader by Actron®. PocketScan Code Reader CP9125 is an easy-to-use tool for novice and light-to-moderate DIY customers. It enables the user to read diagnostic trouble codes (DTCs) from the on-board computers of 1996...
      Reads and erases Diagnostic Trouble Codes (DTCs) and turns off check engine lightDisplays MIL (Malfunction Indicator Lamp) status
      $59.75
    • Actron® Pocketscan Plus
      (1 reviews)
      # 15891034
      Pocketscan Plus by Actron®. PocketScan® Plus is the most advanced, powerful and compact code reader available! DTC’s (Diagnostic Trouble Codes) and descriptions are just a start of the tasks it can handle. PocketScan Plus also...
      Automatically reads DTCs when connected for fast diagnosticsDisplays OBDII generic code definitions
      $72.86
    • Actron® U-Scan Cellular VCI
      (1 reviews)
      # 15891044
      U-Scan Cellular VCI by Actron®. The U-Scan provides DIYers (Do It Yourselfers) with access to their vehicle diagnostics using their smartphone. Developed by the manufacturers of DIY and professional diagnostic scan tools, U-Scan...
      Wirelessly connects to your iPhone, iPod and Android smartphoneReads and erases codes and turns off check engine light
      $79.42
    • Actron® U-Scan Code Reader For Use With PHone App Software on
      (1 reviews)
      # 35960878
      U-Scan Code Reader For Use With PHone App Software on by Actron®. Get the features of an automotive scan tool on your smartphone. Vehicle diagnostics made easy. U-Scan provides DIYers with access to their vehicle diagnostics using...
      Made with precision and quality in mindBuilt to last
      $79.42
    • Autel® Autobody and Mechanical Specialty MaxICHECK Scan Tool
      (0 reviews)
      # 35961356
      Autobody and Mechanical Specialty MaxICHECK Scan Tool by Autel®. This is a simple and easy to use tool designed to service specialized systems: Engine, Transmission, ABS, EPB, Airbags, TPMS, Oil Reset Wheel. Covers over 40...
      Made with precision and quality in mindBuilt to last
      $599.95
    • Autel® MaxiDAS Diagnostic Scan Tool
      (0 reviews)
      # 35978567
      MaxiDAS Diagnostic Scan Tool by Autel®.
      Made with precision and quality in mindBuilt to last
      $44.34 - $1,450.00
    • Autel® OBDII Scan Tool
      (0 reviews)
      # 35978953
      OBDII Scan Tool by Autel®.
      Made with precision and quality in mindBuilt to last
      $29.00 - $350.00
    • Autel® OBDII and Electrical Test Tool
      (0 reviews)
      # 35978950
      OBDII and Electrical Test Tool by Autel®.
      Made with precision and quality in mindBuilt to last
      $109.95 - $129.95
    • General Technologies® Multisystem Engine Analyzer
      (0 reviews)
      # 35965697
      Multisystem Engine Analyzer by General Technologies®. The TA500's unique and proprietary technology allows the user to perform quick and reliable diagnostics of non-starts, misfires, fouled up or damaged spark plugs and/or spark...
      Made with precision and quality in mindBuilt to last
      $255.68
    • Innova® OBDII Scan Tool
      (0 reviews)
      # 35978964
      OBDII Scan Tool by Innova®.
      Made with precision and quality in mindBuilt to last
      $24.13 - $314.26
    • Launch Tech® CR6 Code Reader and Graphing Diagnostic Tool
      (0 reviews)
      # 35963806
      CR6 Code Reader and Graphing Diagnostic Tool by Launch Tech®. Generic and Manufacturer specific definitions are Built Right into This Scan Tool. Coverage for the latest modes 1 thru 10. Performs 0xygen and Evap Tests. 2010 and...
      Made with precision and quality in mindBuilt to last
      $110.64
    • Launch Tech® Diagnostic Scan Tool
      (0 reviews)
      # 35973477
      Diagnostic Scan Tool by Launch Tech®.
      Made with precision and quality in mindBuilt to last
      $69.38 - $1,201.58
    • Midtronics® 1000 Amp Electrical Diagnostic Analyzer Kit
      (0 reviews)
      # 35964823
      1000 Amp Electrical Diagnostic Analyzer Kit by Midtronics®. EXP-1000 KIT - EXP-1000 Analyzer, IR Printer, 10' Battery Test Cable, DMM Clamps and Probes, Carrying Case, and Stud Adapters. Tests 6 and 12 volt automotive and marine...
      Made with precision and quality in mindBuilt to last
      $1,411.23
    • OTC® Heavy Duty Code Reader OBDII
      (0 reviews)
      # 35965112
      Heavy Duty Code Reader OBDII by OTC®. Heavy-Duty Code Reader The perfect tool for: Technicians that need a fast Toolbox Tool to read and clear heavy duty DTC s, heavy-duty shops that need a second tool in the shop and for their...
      Made with precision and quality in mindBuilt to last
      $433.61
    • OTC® Scan Tool
      (0 reviews)
      # 35981347
      Scan Tool by OTC®.
      Made with precision and quality in mindBuilt to last
      $91.02 - $1,995.00
    • Electronic Specialties® OBD II Code Scanner With Live Data (CODE Buddy)
      (0 reviews)
      # 35961930
      OBD II Code Scanner With Live Data (CODE Buddy) by Electronic Specialties®. Works with all 1996 and later OBDII compliant US, European and Asian vehicles. Supports CAN (Controller Area Network). Bi-Lingual English/Spanish. RETRIEVE...
      Made with precision and quality in mindBuilt to last
      $64.98
    • Launch Tech® CRIV OBDII Code Reader
      (0 reviews)
      # 35963810
      CRIV OBDII Code Reader by Launch Tech®. The Creader IV+ builds upon the success of the Creader IV and adds to it internet updateability so code libraries are always up to date! A more durable outer casing has also been added....
      Made with precision and quality in mindBuilt to last
      $45.28
    • Launch Tech® Launch Pad Scan Tool
      (0 reviews)
      # 35963811
      Launch Pad Scan Tool by Launch Tech®. The Absolute Fastest Scan Tool From Diagnostics To Repair, RIGHT AT THE VEHICLE. The X431 Launch Pad - the absolute fastest scan tool, from diagnostics to repair, right at the vehicle. With...
      Made with precision and quality in mindBuilt to last
      $3,217.66
    • OTC® Nemisys OBDII Sytem
      (0 reviews)
      # 35978788
      Nemisys OBDII Sytem by OTC®. Includes Nemisys scan tool loaded with New OEM based 2011 Domestic and Asian coverage back to 1983 for engine, body, and chassis systems. Includes the NEW Code-Assist? Library of experienced-based...
      Made with precision and quality in mindBuilt to last
      $820.57
    • Schumacher ® 7 Ah Memory Saver With OBD Connection
      (0 reviews)
      # 35965685
      7 Ah Memory Saver With OBD Connection by Schumacher ®. What is a Memory Saver and How Does It Work A Memory Saver is a device that plugs into a port on a vehicle (lighter, power port or OBDII) and provides back-up power while the...
      Made with precision and quality in mindBuilt to last
      $75.44

    Guides & Articles
    Are Superchips Really Super?
    Although most automobile manufacturers try to achieve a balance between performance and emissions when the ECU is programmed, in reality more power can be obtained when certain engine control parameters are changed. Aftermarket superchips are made to adjust parameters to increase engine power and torque. The superchip gives a “boost” to your vehicle’s...
    The throttle controller will basically bypass the computer in the vehicle. It is designed to take the information right from the accelerator position sensor and compile it in a high speed controller circuit that compiles the signal sent from the Accelerator position sensors. With this controller you are able to program it to different options and the throttle...
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    2003 Silverado Performance Chips & Programmers Reviews
    Average rating: 5 4.8 - 1 reviews
    (4.8)
    APPEARANCE
    EASE OF INSTALLATION
    PRICE/VALUE
    QUALITY
    2001 Chevy Silverado | Posted by Braden | (Willis, TX)

    I can't figure out the mileage mode to get the best gas mileage out of this chip but other than that the chip is amazing, I have a 01 silverado 1500 5.3L v8 and I'm pushing 328 hp, I don't know what it was before. But you can definitely feel the difference!

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    2003 Chevy Silverado Models
    • 2003 Chevy Silverado 1500 Base Performance Chips
    • 2003 Chevy Silverado 1500 LS Performance Chips
    • 2003 Chevy Silverado 1500 LT Performance Chips
    • 2003 Chevy Silverado 1500 SS Performance Chips
    • 2003 Chevy Silverado 1500 WT Performance Chips
    • 2003 Chevy Silverado 1500 HD LS Performance Chips
    • 2003 Chevy Silverado 1500 HD LT Performance Chips
    • 2003 Chevy Silverado 2500 Base Performance Chips
    • 2003 Chevy Silverado 2500 LS Performance Chips
    • 2003 Chevy Silverado 2500 LT Performance Chips
    • 2003 Chevy Silverado 2500 HD Base Performance Chips
    • 2003 Chevy Silverado 2500 HD LS Performance Chips
    • 2003 Chevy Silverado 2500 HD LT Performance Chips
    • 2003 Chevy Silverado 3500 Base Performance Chips
    • 2003 Chevy Silverado 3500 LS Performance Chips
    • 2003 Chevy Silverado 3500 LT Performance Chips