Description
2019 Buick LaCrosse 2.5L ECM / ECU – VIN Programmed | Plug & Play
This Engine Control Module (ECM / ECU) is a genuine OEM replacement for all 2019 Buick LaCrosse 2.5L 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
Jordan Lopez –
I was really impressed with how easy it was to install this ECM on my 2019 Buick LaCrosse. It came pre-programmed to my VIN, so I just plugged it in and everything fired right up without any hassle. Shipping was quick, and the support team was helpful when I had a couple of questions. Overall, a seamless experience that saved me a lot of time and stress.
Mark Stewart –
This ECM was ready to go right out of the box and got my LaCrosse running smoothly again—super fast delivery too!
Installation was a breeze with the plug-and-play setup, and the tech support was quick to answer a couple of my questions.
Perfect fit for my 2019 Buick, arrived quicker than expected, and worked flawlessly without any extra programming needed.
Had this ECU up and running in no time; the VIN programming saved me so much hassle—definitely recommend it!
Quick ship and a hassle-free install made this the easiest upgrade for my Buick LaCrosse’s engine control.