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



Kyle Tucker –
The 2018 Buick LaCrosse ECM arrived quickly and was already VIN programmed, which made installation straightforward. I appreciated the clear communication from the seller, who answered all my questions promptly. Shipping was free, which was a nice bonus, and the unit has been working perfectly since day one. Overall, a smooth and hassle-free experience.
Harvey Douglas –
The ECM arrived quickly and was exactly as described, making installation straightforward with the plug-and-play setup. I appreciated the clear communication from the seller, which made the whole process stress-free. Choosing this unit saved me a ton compared to dealer pricing, and my 2018 Buick LaCrosse is running perfectly now. Overall, a smooth and professional experience from start to finish.
Hunter Cook –
The VIN programming was flawless, and their communication was top-notch throughout the process. Shipping was quick and hassle-free too.
Steven Hudson –
The ECM arrived quickly and was truly plug-and-play, saving me a bundle compared to dealer prices. Installation was a breeze, and their communication made the whole process smooth.
Zachary Evans –
I recently purchased the 12678971 ECM for my 2018 Buick LaCrosse, and I couldn’t be happier with the whole experience. Shipping was surprisingly quick, which helped me get my car back on the road in no time. The unit arrived already VIN programmed, so installation was truly plug-and-play—no headaches or extra trips to a mechanic. Compared to the dealer’s quote, I saved a significant amount, and the communication from the seller was very clear and professional throughout. Overall, this service made what could have been a stressful repair incredibly smooth and affordable.