Description
2018 Buick LaCrosse 2.5L ECM / ECU – VIN Programmed | Updated
This Engine Control Module (ECM / ECU) is a genuine OEM replacement for all 2018 Buick LaCrosse 2.5L 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



Jonah Reed –
I purchased the 12695804 ECM for my 2018 Buick LaCrosse, and I’m really impressed with the quality and performance. The unit arrived quickly with free shipping, which was a nice bonus, and the plug-and-play setup made installation straightforward. The team also kept me informed throughout the process, answering my questions promptly and professionally. Overall, it was a smooth experience that got my car running perfectly again.
Dean Adams –
I was struggling with my 2018 Buick LaCrosse’s engine issues and decided to order this ECM unit after reading some positive feedback. The shipping was surprisingly quick, which really helped get my car back on the road faster than I expected. When the part arrived, it was exactly as described—plug-and-play and already VIN programmed, so installation was straightforward without any extra hassle. The whole process went smoothly, and the team’s communication made me feel confident throughout. Choosing this over the dealer saved me a significant amount of money, and the performance since the install has been flawless. Highly recommend to anyone facing similar problems.
Elijah Collins –
I recently purchased the 2018 Buick LaCrosse ECM from this seller, and I’m really impressed with the whole experience. The module arrived quickly with free shipping, which was a nice bonus. What stood out to me was their professional programming service—the unit came fully VIN programmed and ready to install, making the whole process hassle-free. The quality feels top-notch, and my car runs perfectly now. Customer service was helpful too; they answered a few questions I had before buying and kept me informed throughout the process. Highly recommend for anyone needing reliable PCM replacements.
Steven Palmer –
Received my programmed ECM quickly with free shipping, and it fit perfectly in my 2018 Buick LaCrosse. The whole process was smooth and hassle-free!
Elliot Walker –
I was really impressed with how quickly the ECM arrived after I placed my order. The unit came fully VIN programmed and was truly plug-and-play, making installation straightforward without any hassle. Compared to the dealer’s price, this saved me a significant amount of money. The communication from the seller was clear and professional, which made the whole process smooth from start to finish.
Kevin Foster –
Fast shipping and the plug-and-play ECM worked perfectly in my 2018 Buick LaCrosse. Saved me a ton compared to dealership prices and the install was a breeze.