Description
2005 Buick Park Avenue 3.8L ECM / ECU – VIN Programmed | Updated
This Engine Control Module (ECM / ECU) is a genuine OEM replacement for all 2005 Buick Park Avenue 3.8L 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 Cooper –
I was impressed with the quality of the ECM for my 2005 Buick Park Avenue. The unit arrived quickly, and the free shipping was a nice surprise that saved me some extra cost. Installation was straightforward since it came VIN programmed, so I didn’t have to worry about any complicated setups. The car runs smoothly now, and I’m really pleased with how well the whole process went. The team also kept me informed from start to finish, which made the experience stress-free.
Frank Stewart –
I purchased the 2005 Buick Park Avenue ECM from this seller and was very impressed with the entire process. The ECU arrived quickly with free shipping, and it was already VIN programmed, so installation was a breeze. The quality of the part is excellent, and my car runs smoother than before. They also responded promptly when I had a few questions, which gave me added confidence in my purchase.
John Perez –
Fast shipping and the unit was truly plug-and-play. Saved me a ton compared to dealer prices and the install went super smooth.
Frank Adams –
I was really impressed with how smoothly everything went ordering the ECM for my 2005 Buick Park Avenue. The unit arrived quickly with free shipping, which was a nice bonus. What stood out most was their professional programming service—they had the ECU perfectly matched to my car’s VIN before it even shipped, so installation was seamless. I also appreciated how well they communicated throughout the process, answering my questions promptly and keeping me in the loop. Since swapping it in, the car runs as if it’s brand new.
Ian Willis –
Fast shipping and the ECU arrived perfectly programmed for my 2005 Park Avenue—plug-and-play setup made installation a breeze.