Description
2005 Chevrolet Avalanche 5.3L ECM / ECU – VIN Programmed | Updated
This Engine Control Module (ECM / ECU) is a genuine OEM replacement for all 2005 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




Travis Phillips –
The programming service was flawless, and the part arrived quickly with free shipping—highly recommend!
Eric Nichols –
Arrived super fast and was completely plug-and-play, saving me a fortune compared to the dealer. Installation went smoothly and the customer support was spot on.
Liam Green –
I was really impressed with the quality of this ECM for my 2005 Chevrolet Avalanche. The plug-and-play setup made installation straightforward, and it was already VIN programmed when it arrived. Shipping was surprisingly quick and didn’t cost extra, which was a nice bonus. Overall, the whole process was smooth and hassle-free.
Shane Wright –
The ECM for my 2005 Chevy Avalanche arrived much faster than I expected, which was a huge relief. It was truly plug-and-play, making installation straightforward without any hassles. The professional service they provided saved me a significant amount compared to the dealer’s price. Overall, a smooth and efficient experience from start to finish.
Justin Evans –
I was really impressed with how quickly this ECM arrived—I wasn’t expecting such fast shipping. Installing the unit was a breeze since it came fully VIN programmed and truly plug-and-play. It got my 2005 Avalanche running perfectly again without the hassle of dealing with the dealer. The whole process was smooth, and the customer service was responsive when I had a couple of questions. Overall, this solution saved me a ton of money and a lot of downtime, definitely worth it.
Isaac Murphy –
I was really impressed with how smoothly everything went when I ordered the ECM for my 2005 Chevy Avalanche. The VIN programming was spot on, and it was truly a plug-and-play experience—I just installed it, and my truck fired up without a hitch. The team kept me in the loop the whole time, answering my questions promptly and clearly, which made the whole process stress-free. Shipping was surprisingly fast and affordable, which was a nice bonus. Overall, excellent quality and service; I’d definitely recommend them to anyone needing a reliable ECM replacement.