2003 Avalanche Performance Chips & Programmers

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    • (1 reviews)
      $624.75$499.80
      Chevy Avalanche 2003, Triple Dog GT Tuner by Bully Dog®. The Triple Dog Gauge Tuner or GT is four products in one: a vehicle engine tuner, monitor, gauge and diagnostic device all in a single unit. The GT dramatically improves the...
      # 42489117
    • (1 reviews)
      $353.99$283.19
      Chevy Avalanche 2003, WatchDog™ Monitor by Bully Dog®. Monitor multiple vehicle parameters. Plugs into OBD-II port for easy installation. Mount permanently or suction cup to windshield. Great for tuning or towing. Tracks vehicle...
      # 42489120
    • (1 reviews)
      $548.75from $439.00 - $589.00
      Chevy Avalanche 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...
      # 49775749
    • (0 reviews)
      $461.25$369.00
      Chevy Avalanche 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...
      # 49775752
    • (1 reviews)
      $373.75from $299.00 - $399.00
      Chevy Avalanche 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...
      # 49775754
    • (0 reviews)
      $748.75$599.00
      Chevy Avalanche 5.3L / 6.0L / 8.1L 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...
      # 53058003
    • (0 reviews)
      $486.25$389.00
      Chevy Avalanche 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....
      # 53057246
    • (0 reviews)
      $411.25$329.00
      Chevy Avalanche Gas 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...
      # 7579886
    • (0 reviews)
      $286.25$229.00
      Chevy Avalanche 2003, Speedometer Calibrator Programmer 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...
      # 1684104
    • (0 reviews)
      $748.75$599.00
      Chevy Avalanche 8.1L 2003, Livewire TS Performance Programmer & Monitor by SCT Performance®, +33 RWHP / +38 RWTQ. Recalibrate your vehicle’s engine management computer for better performance with the Livewire TS Performance...
      Recalibrates your vehicle’s computer to maximize performance, develop more power and torque, and increase fuel mileageArrives pre-loaded with dyno-proven tune files
      # 15804491
    • (0 reviews)
      $586.25$469.00
      Chevy Avalanche 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
      # 15803450
    • (0 reviews)
      $927.35$741.88
      Chevy Avalanche Gas 2003, iQ Flash by Banks®. HP Gain: Up To 154 hp, TQ Gain: Up To 318. Includes AutoMind Flash Programming Module. Take complete control of all added power and safety functions when you connect the Banks iQ Flash...
      # 3144024
    • (0 reviews)
      $468.75$375.00
      Chevy Avalanche Gas 2003, Dynamic Spectrum Tuner 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...
      Modify Virtually Every AspectAllows Editing Of Fuel And Spark Tables
      # 13548771
    • (0 reviews)
      $271.83from $217.46 - $337.49
      Chevy Avalanche Gas 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...
      Modify Virtually Every AspectAllows Editing Of Fuel And Spark Tables
      # 13548770
    • (0 reviews)
      $303.70from $242.96 - $250.46
      Chevy Avalanche 2003, Power Control Module by JET®. These Stage 2 performance chips/modules from JET will improve the performance of your car or truck with very little work. These chips have been programmed to deliver peak power...
      Add Up To 25 HorsepowerPlug-In Installation
      # 13548775
    • (0 reviews)
      $187.45$149.96
      Chevy Avalanche 2500 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...
      # 13545506
    • (0 reviews)
      $402.68$322.14
      Chevy Avalanche 2003, GT Platinum Programmer by Bully Dog®. Shift Point/Firmness. Speed Limit. The GT Platinum is four products in one; a vehicle engine tuner, monitor, gauge and diagnostic device all in a single unit. The GT...
      # 42488737
    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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