Description
2004 Buick Rendezvous 3.4L ECM / ECU – VIN Programmed | Updated
This Engine Control Module (ECM / ECU) is a genuine OEM replacement for all 2004 Buick Rendezvous 3.4L 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
Hunter Rogers –
I recently bought the 2004 Buick Rendezvous 3.4L ECM from this seller and was really impressed. The shipping was fast and the unit came fully VIN programmed, so it was truly plug-and-play. Installation was straightforward with no issues, and the whole process saved me a significant amount compared to dealer prices. The team was also very responsive when I had questions, making the experience smooth from start to finish.
Jorge Moore –
I was really impressed with how quickly the 2004 Buick Rendezvous ECM arrived after I placed my order. The unit was already VIN programmed, so installation was straightforward—just plug and play with no headaches. This saved me a ton compared to the dealer’s price, which was ridiculously high. The whole process went smoothly, and I appreciated the clear communication from the seller throughout. My Rendezvous is running perfectly now, and I couldn’t be happier with the professional service and quick turnaround. Definitely a smart choice if you need a reliable ECM without breaking the bank.
Liam Campbell –
The ECM arrived quickly with free shipping and was perfectly programmed for my 2004 Buick Rendezvous—super smooth plug-and-play installation.
Great communication throughout the entire process, and the updated ECM fit and worked flawlessly right out of the box.
Brian Moore –
The shipping arrived quickly, and the unit was truly plug-and-play. This saved me a ton compared to dealer prices, plus the installation was a breeze.