Description
2006 Chevrolet Avalanche 5.3L ECM / ECU – VIN Programmed | Updated
This Engine Control Module (ECM / ECU) is a genuine OEM replacement for all 2006 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




Colin Baker –
Shipping arrived quickly and the unit was truly plug-and-play. This saved me a ton compared to dealer prices, and the installation went off without a hitch.
Chase Lopez –
The 2006 Chevrolet Avalanche ECM I ordered arrived quickly and was ready to install right out of the box. It was a true plug-and-play unit, which made the whole process hassle-free and saved me a lot compared to dealer prices. The communication from the seller was clear, and the entire transaction felt professional and efficient. Overall, a smooth experience that got my truck back on the road in no time.
Brandon Hudson –
I was really impressed with how quickly the ECM arrived—shipping was faster than I expected. When I got it installed on my 2006 Chevrolet Avalanche, it was completely plug-and-play, which made the whole process stress-free. The updated VIN programming worked perfectly right out of the box. This saved me a ton of money compared to taking my truck to the dealer, where the cost would have been through the roof. Plus, the customer support was responsive and made sure I had all the info I needed before installation. Overall, a smooth experience that I’d happily recommend to anyone needing a replacement ECU.
Shane Young –
Arrived quickly with free shipping and worked perfectly right out of the box—very satisfied with the easy plug-and-play setup.