Description
2004 Cadillac CTS 3.2L ECM / ECU – VIN Programmed | Updated
This Engine Control Module (ECM / ECU) is a genuine OEM replacement for all 2004 Cadillac CTS 3.2L 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



Caleb Foster –
Super fast shipping and the ECU came perfectly programmed for my 2004 CTS—plug and play, no hassle at all.
Really impressed with their quick responses and the professional programming service; the updated ECM fits like a glove and runs flawlessly.
Shipping was super affordable and the unit arrived ready to install, which saved me tons of time and stress.
They kept me in the loop throughout the entire process and the quality of the PCM is outstanding—definitely recommend.
Received the ECU faster than expected and it was already VIN programmed, making installation a breeze.
Miguel Wallace –
I’m really impressed with this ECM for my 2004 Cadillac CTS. The unit arrived quickly and was truly plug-and-play, making installation a breeze. The service was professional, and the team’s communication kept me informed throughout the process. Overall, this saved me a significant amount compared to dealer pricing, and my car runs perfectly now.
John Miller –
Fast shipping and the ECU was truly plug-and-play; this saved me a bundle compared to dealer prices. Installation was a breeze and the communication was on point.
Brian Payne –
I needed a replacement ECM for my 2004 Cadillac CTS, and this one worked perfectly. The VIN programming was spot on, so installation was straightforward without any hassles. Shipping was free and arrived faster than expected, which was a big plus. Customer service was very responsive and answered all my questions promptly, making the whole process smooth and worry-free.