2003 Chevrolet Avalanche 2500 Programmers

Keep Your 2003 Chevrolet Avalanche 2500 in Top Shape with a Quality Programmer

When it comes to maintaining or upgrading your 2003 Chevrolet Avalanche 2500, choosing high-quality parts is crucial for ensuring your vehicle stays in top shape, whether you’re tackling a repair or enhancing performance. At Advance Auto Parts, we know how important it is to find the right Programmer for your Avalanche 2500. We currently carry a top Programmer in stock that is built to last. Whether you’re replacing a damaged Programmer or looking to upgrade, our selection for the 2003 Chevrolet Avalanche 2500 ensures you’ll find exactly what you need to keep your vehicle looking and performing its best.

Explore Related Parts

And while you’re here, don’t forget to check out related part categories like Performance Air Intake Kits and Performance Shifters to complete your upgrade or repair project. At Advance Auto Parts, we’re proud to offer the parts and expertise to keep your 2003 Chevrolet Avalanche 2500 running smoothly and looking great.

Essential 2003 Chevrolet Avalanche 2500 Programmers

SCT Performance – X4 Performance Programmer (Part No.7416)

X4 Performance Programmer

from

$399.99
The X4 Performance Programmer connects high-performance tunes to your vehicle for an immediate boost in horsepower and torque. Awaken your engine to its maximum real potential with preloaded, dyno-proven tune files through the easy-to-use functionality. Instantly increase horsepower and torque and customizeModify a variety of parameters at the touch of a button, all while monitoring gauges on a customizable display.

Product Features:
  • Read vehicle performance data on a full-color LCD display for easy viewing, day or night.
  • Preloaded, street-tested, dyno-proven tunes boost horsepower, torque, and throttle sensitivity.
  • Reads and clears DTC (Diagnostic Trouble Codes) with ease.
  • Load up to 10 custom tune files created by any SCT Custom Tuning Dealer.
  • Full color LCD display
  • High-speed data logging/monitoring
  • Dual analog inputs
  • Most popular vehicles supported
  • Installs quickly and easily
  • Easy restoration back to stock
  • User adjustable vehicle parameters
  • USB Interface cable included
  • Product might not be available in all states due to local laws.
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Bully Dog – 50-State Gas Tuner: Boost Performance, Fuel Economy, & Diagnostics (Part No.40410)

50-State Gas Tuner: Boost Performance, Fuel Economy, & Diagnostics

from

$399.99
The GT Platinum Gas 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 your vehicle by increasing horsepower, improving fuel economy and providing a comprehensive set of monitoring features and diagnostic functions. This product is incomparable to other tuning products because it has the largest feature set and the widest range of vehicle applications from a single product part number.

Product Features:
  • HEADS UP DISPLAY – Monitor over 15 performance parameters at a glance with a dynamic LCD display mounted on a pillar, window, or dash. User set daytime and nighttime driving modes
  • MULTIPLE PRELOADED TUNES – Access four preloaded tunes with the touch of a few buttons to maximize performance in any situation.
  • CODE CLEARING – Diagnose and clear trouble codes to ensure proper engine operation.
  • Reads and Erases Diagnostic Trouble Codes
  • Display Over 15 Vehicle Parameters
  • Installation Is Easy-10-20 Minutes
  • Free Internet Updates And Upgrades
  • 30 Day Money Back Guarantee
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Most Popular Computer Chip Programmer for 2003 Chevrolet Avalanche 2500s

Enhance your 2003 Chevrolet Avalanche 2500 with this popular Computer Chip Programmer we have in stock, for $399.99.

Bully Dog – 50-State Gas Tuner: Boost Performance, Fuel Economy, & Diagnostics (Part No.40410)

50-State Gas Tuner: Boost Performance, Fuel Economy, & Diagnostics

from

$399.99
The GT Platinum Gas 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 your vehicle by increasing horsepower, improving fuel economy and providing a comprehensive set of monitoring features and diagnostic functions. This product is incomparable to other tuning products because it has the largest feature set and the widest range of vehicle applications from a single product part number.

Product Features:
  • HEADS UP DISPLAY – Monitor over 15 performance parameters at a glance with a dynamic LCD display mounted on a pillar, window, or dash. User set daytime and nighttime driving modes
  • MULTIPLE PRELOADED TUNES – Access four preloaded tunes with the touch of a few buttons to maximize performance in any situation.
  • CODE CLEARING – Diagnose and clear trouble codes to ensure proper engine operation.
  • Reads and Erases Diagnostic Trouble Codes
  • Display Over 15 Vehicle Parameters
  • Installation Is Easy-10-20 Minutes
  • Free Internet Updates And Upgrades
  • 30 Day Money Back Guarantee
See More

FAQs for 2003 Chevrolet Avalanche 2500 Programmers

What’s the price range for 2003 Chevrolet Avalanche 2500 Programmers?

We currently have just one Programmers for the 2003 Chevrolet Avalanche 2500 in stock: 50-State Gas Tuner: Boost Performance, Fuel Economy, & Diagnostics and it costs $399.99.

Does Advance Auto Parts sell Programmers for other Chevrolet Avalanche 2500 model years?

Yes, we carry Programmers for 3 model years of Chevrolet Avalanche 2500s between 2002 and 2006. The following model years are the most popular for Programmer purchases: 2006, 2005, 2004, and 2002.

Does Advance Auto Parts sell Programmers for any other 2003 Chevrolet models?

Yes. We stock Programmers for 14 other popular 2003 Chevrolet models. Some of the most popular are 2003 Tahoe Programmers, 2003 Silverado 1500 Programmers, 2003 Suburban 1500 Programmers, 2003 Silverado 2500 HD Programmers, and 2003 Suburban 2500 Programmers.

What are the top-rated Programmers that fit the 2003 Chevrolet Avalanche 2500?

The one 2003 Chevrolet Avalanche 2500 Programmer we have in stock is the 50-State Gas Tuner: Boost Performance, Fuel Economy, & Diagnostics. It is rated 3.5 stars and costs $399.99.

What types of Programmers do you sell for my 2003 Chevrolet Avalanche 2500?

We currently have just 1 Programmer in stock for a 2003 Chevrolet Avalanche 2500, and as of 11/2/25, it is a Computer Chip Programmer.

Can I get help with 2003 Chevrolet Avalanche 2500 Programmer orders?

Contact our customer support team by chat or phone, through the help desk page, where you can find instant answers about Chevrolet Programmers and more.

What is your return policy for Chevrolet Avalanche 2500 Programmers?

Advance Auto Parts keeps returns simple. For new Chevrolet Avalanche 2500 Programmers and accessories, your online orders can be returned, in their original condition, within 45 days. For requirements, see the returns page.