Description
2004 Chevrolet Avalanche 5.3L ECM / ECU – VIN Programmed | Updated
This Engine Control Module (ECM / ECU) is a genuine OEM replacement for all 2004 Chevrolet Avalanche 5.3L models.
Each unit is VIN-programmed, updated, and fully tested.Built to OEM standards for reliability, calibration accuracy, and long-term performance.
Strict Testing & Quality Assurance
This is not a brand-new unit. It is a rebuilt unit that is inspected, refreshed, and fully tested before shipping.
Testing includes communication, CAN-bus, sensor signal, power circuit, flash memory, and reliability checks.
Important Note
If your vehicle does not have an IMMO or PATS system, this unit will be directly plug&play.
If your vehicle has an IMMO or PATS system, it will require a key relearn after installation. You can visit your local locksmith for help.
We also offer a full cloning service. We transfer all security data to the replacement unit, so it will be a plug&play installation.
For all European cars, Hyundai, and Kia vehicles, we recommend adding our cloning service as a bundle.
For American and Japanese cars, we recommend doing a key relearn on-site.
Contact Us
Email: info@fixecm.com
Phone: Local: 647-247-8555 | Toll-Free: 1-800-915-5566
Diego Tucker –
I was really impressed with the quality and accuracy of the ECU for my 2004 Chevrolet Avalanche. The VIN programming was spot on, and the unit arrived quickly with free shipping, which was a nice bonus. The whole process was straightforward, and their team answered my questions promptly, making the purchase feel very secure. It’s been running flawlessly since installation.
Chase Edwards –
Fast shipping and the unit was truly plug-and-play. Saved me a bundle compared to dealer prices and installation went without a hitch.
Samuel Moore –
I was a bit nervous about ordering an ECM online, but this 2004 Chevrolet Avalanche 5.3L unit arrived quickly and in perfect condition. The VIN programming service they offer made the installation straightforward—just plug and play with no headaches. What impressed me most was how they kept me updated from the moment I placed the order until delivery. The whole process was smooth, and my truck runs better than ever now. Definitely a reliable source if you need ECU replacements.
Samuel Murray –
I’m really pleased with the 2004 Chevrolet Avalanche ECM I purchased. The shipping was surprisingly quick, and when it arrived, it was truly a plug-and-play unit with no hassle during installation. The programming matched my VIN perfectly, and compared to the dealer’s quote, this saved me a significant amount of money. The communication from the seller was clear and professional throughout the process, making the whole experience smooth and stress-free.
Chase Wallace –
Great quality PCM with prompt VIN programming and free shipping—had my Avalanche running like new in no time!