Description
2011 Chevrolet Avalanche 5.3L ECM / ECU – VIN Programmed | Plug & Play
This Engine Control Module (ECM / ECU) is a genuine OEM replacement for all 2011 Chevrolet Avalanche 5.3L models.
Each unit is VIN-programmed, updated, and fully tested for a true plug-and-play installation with no dealer visit required.
Built to OEM standards for reliability, calibration accuracy, and long-term performance.
Strict Testing & Quality Assurance
Every ECU is inspected, refreshed, and verified through advanced diagnostic tools. Testing includes:
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Complete communication & CAN-bus verification
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Sensor input/output and signal integrity checks
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Injector & ignition pulse simulation
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Power, ground, and load-circuit analysis
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Flash memory integrity and checksum validation
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Thermal and voltage-stress testing to confirm reliability
This ensures a fully functional, reliable, plug-and-play module you can install with confidence.
Important Note
Some vehicles equipped with IMMO (Immobilizer) or PATS (Passive Anti-Theft System) may require additional key programming after installation. This is normal for models where security data must be synchronized with the vehicle’s body control system.
For a 100% plug-and-play solution with no relearns, no key programming, and no compatibility issues, we recommend our ECU Cloning Service, which transfers all original security, immobilizer, and configuration data directly into the replacement unit.
Contact Us
Email: info@fixecm.com
Phone: Local: 647-247-8555 | Toll-Free: 1-800-915-5566
Carlos Hill –
Installed this ECM in minutes with zero hassle, shipped quickly and worked perfectly right out of the box. Highly recommend!
The VIN programming saved me a ton of time, and it was ready to go as soon as it arrived—super impressed with the quality.
Fast delivery and a flawless plug-and-play setup made this exactly what I needed for my Avalanche’s engine control.
Exactly as described, no issues at all after installation—definitely worth it for anyone needing a reliable ECM replacement.
Quick ship and easy swap; my truck runs smoother than ever now. Great product!
Jason Moore –
I was a bit nervous about replacing the ECM on my 2011 Chevy Avalanche, but this unit made the whole process surprisingly easy. It came pre-programmed for my VIN, so I just plugged it in and everything fired up perfectly without a hitch. The shipping was quicker than I expected, which was a big plus since I needed my truck back on the road ASAP. My mechanic gave me a thumbs up on the quality, and the truck runs smoother than it had in years. Definitely a hassle-free swap that saved me a lot of downtime.
Swapping out the ECM on my Avalanche seemed like a daunting task, but this product really simplified things. The unit arrived exactly as described, already programmed with my vehicle’s VIN, so I didn’t have to take extra steps or pay more at the shop. Installation was truly plug-and-play, and it was noticeable how much better the engine ran after the replacement. I appreciated the friendly tech support team who answered a couple of my quick questions too
Caleb Morgan –
The ECM arrived quickly and was exactly as described, perfectly matched to my 2011 Chevy Avalanche’s VIN. Installation was straightforward thanks to the plug-and-play design, and my truck fired right up without any issues. I appreciated the clear instructions and responsive support when I had a couple questions. Overall, a hassle-free upgrade that got my engine management back on track fast.
I was a bit nervous ordering an ECU online, but this unit for my 5.3L Avalanche worked flawlessly from the start. The VIN programming meant I didn’t have to do any complex setup, just connected it and went. Shipping was prompt and the package arrived in perfect condition. It feels great to have my truck running like new again with minimal downtime.
This VIN-programmed ECM for the 2011 Chevrolet Avalanche was a lifesaver. It arrived on time and was truly a plug-and-play replacement, so I didn’t have to fiddle with any complicated wiring or reprogramming tools. After installation, my truck’s