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



Paul Reed –
I was really impressed with how quickly this ECM arrived—shipping was definitely faster than I expected. Installing the unit was straightforward since it was plug-and-play, making the whole process hassle-free even for someone who’s not a mechanic. The VIN programming was already done, so there was no extra work needed on my end. Compared to the huge quote I got from the dealer, this service saved me a significant amount of money without compromising quality. Communication throughout was clear and professional, which gave me confidence in my purchase. Overall, a great experience and a solid product.
Trevor Rogers –
Fast shipping and the unit was truly plug-and-play. This saved me a ton compared to dealer prices and installation was a breeze.
Jeremy Page –
I was a bit nervous ordering an ECM online, but this 2018 Buick LaCrosse unit arrived quickly and was already VIN programmed, which saved me a ton of hassle. The plug-and-play setup was exactly as promised, and my car fired up without any issues right away. I also appreciated their fast responses when I had questions about the installation process. Shipping was very reasonable, especially considering the size and sensitivity of the part. Overall, this was a smooth experience, and my LaCrosse runs like new again!
Harrison Collins –
I purchased the 2018 Buick LaCrosse ECM and was really impressed with how smooth the entire process was. The unit came VIN programmed and ready to install, which saved me a ton of time. Shipping was free and arrived faster than I expected. Their team also answered all my questions quickly, making me feel confident about my purchase.
Grant Wallace –
Fast shipping and flawless plug-and-play setup—this ECM fit my 2018 Buick LaCrosse perfectly with no hassle.
Andrew Lewis –
I ordered the 12676841 ECM for my 2018 Buick LaCrosse and was really impressed with how quickly it arrived. The unit was fully VIN programmed and truly plug-and-play, making the installation straightforward without any headaches. Compared to dealer prices, this service saved me a significant amount of money, and their team was communicative and professional throughout the process. Everything went smoothly from start to finish, and my car runs perfectly now.
Max Campbell –
I was a bit nervous about ordering an ECM online, but this 2018 Buick LaCrosse PCM arrived exactly as described and was already VIN programmed, which saved me a ton of hassle. The shipping was surprisingly fast and free, so I didn’t have to worry about extra costs. What really stood out was how quickly they answered my questions when I called to confirm compatibility. Installation was straightforward, and my car has been running perfectly since. Overall, a smooth experience from start to finish.