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



Russell Payne –
The unit arrived quickly and was truly plug-and-play, saving me hundreds versus the dealer. Installation was smooth and the service team kept me updated throughout.
Dylan Young –
Fast shipping and the ECU came perfectly programmed for my 2018 Buick LaCrosse—plug and play with zero hassle. The team was quick to answer my questions, which made the whole process smooth.
Aaron Harrison –
I was really impressed with how quickly this ECM arrived—it shipped faster than I expected. Installation was straightforward since it was fully programmed and plug-and-play, which made the whole process stress-free. The price was much better than what the dealer quoted me, saving me a significant amount. Overall, the service was professional and responsive, making this a great purchase.
Ethan Murray –
I recently purchased the 12688957 ECM for my 2018 Buick LaCrosse, and I’m really impressed with the quality and service. The unit arrived quickly with free shipping, which was a nice bonus. They completed the VIN programming professionally, so the install was straightforward with no issues. Customer support was responsive and kept me informed throughout the process, making it a smooth experience overall.
Russell Wallace –
I was really impressed with how quickly the ECM arrived after I placed my order—definitely faster than I expected. When I received the unit, it was already VIN programmed and truly plug-and-play, making installation straightforward without any headaches. The process went smoothly, and I’m thrilled I didn’t have to pay the dealer’s high prices for a replacement. The customer service was responsive and clear, which gave me confidence throughout the whole experience. Overall, this purchase saved me a lot of money and stress, and my 2018 Buick LaCrosse runs perfectly now. I would definitely use this service again if needed.