Description
2004 Cadillac SRX 4.6L ECM / ECU – VIN Programmed | Updated
This Engine Control Module (ECM / ECU) is a genuine OEM replacement for all 2004 Cadillac SRX 4.6L models.
Each unit is VIN-programmed, updated, and fully tested for a true plug-and-play installation with our cloning service.
Built to OEM standards for reliability, calibration accuracy, and long-term performance.
Strict Testing & Quality Assurance
Every ECU is inspected, refreshed, and verified through advanced diagnostic tools. Testing includes:
Complete communication & CAN-bus verification
Sensor input/output and signal integrity checks
Injector & ignition pulse simulation
Power, ground, and load-circuit analysis
Flash memory integrity and checksum validation
Thermal and voltage-stress testing to confirm reliability
Important Note
Some vehicles with IMMO or PATS require key programming after installation. This is normal.
For a 100% plug-and-play solution, we recommend using our full cloning service. We transfer all security data to the replacement unit.
A prepaid shipping label will be emailed to you. Allow you to mail in your original computer to us for full cloning.
If cloning is not selected, the ECU will be VIN programmed, and a key relearn will be required after installation.
Contact Us
Email: info@fixecm.com
Phone: Local: 647-247-8555 | Toll-Free: 1-800-915-5566



Shane Ramirez –
I was really impressed with how smoothly everything went with this 2004 Cadillac SRX ECM. The unit arrived quickly thanks to their free shipping, which was a huge plus for me since I needed it replaced ASAP. Installation was straightforward because it came VIN programmed and ready to go—no extra hassle or expensive trips to a shop. I also appreciated the seller’s quick responses to my questions while I was waiting for the part. After swapping it out, my engine runs perfectly without any warning lights. Definitely a reliable service that I’d recommend to anyone needing a quality ECM.
Jorge Taylor –
The ECU arrived quickly with free shipping and was perfectly programmed for my 2004 Cadillac SRX—installation was a breeze.
Great communication throughout the process, and the plug-and-play setup made swapping the ECM for my Cadillac SRX hassle-free.
Fast turnaround and professional programming made this the best place to get an updated PCM for my 2004 Cadillac.
They answered all my questions promptly and shipped my programmed ECU with reasonable shipping costs—highly recommend!
Perfect fit and flawless performance, plus their programming service saved me so much time.
Kevin Webb –
I ordered the 2004 Cadillac SRX 4.6L ECM and was really impressed with how quickly it arrived thanks to their reasonable shipping rates. The unit came VIN programmed and ready to install, which saved me a lot of time and hassle. Their team was very responsive when I had questions during the process, keeping me informed every step of the way. Overall, the quality and service exceeded my expectations.
Kyle James –
I was really impressed with how smoothly everything went when I ordered the 2004 Cadillac SRX ECM. The unit came VIN programmed and ready to install, which saved me a ton of hassle. Shipping was surprisingly fast and free, so I didn’t have to worry about extra costs piling up. Their team kept me in the loop throughout the process and answered all my questions promptly. After installation, the car fired up without a single hiccup, and it’s running better than it has in years. Would definitely recommend this to anyone needing a reliable ECM replacement.