Description
2004 Cadillac XLR 4.6L ECM / ECU – VIN Programmed | Updated
This Engine Control Module (ECM / ECU) is a genuine OEM replacement for all 2004 Cadillac XLR 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
Oliver Foster –
I ordered the 2004 Cadillac XLR ECM and was really impressed with the professionalism throughout the process. They handled the VIN programming perfectly, and the plug-and-play setup made installation straightforward. Shipping was surprisingly fast and affordable, which was a nice bonus. The whole experience was smooth, and my car runs like new again.
Liam Carter –
The VIN programmed ECM arrived quickly with free shipping, and it was a perfect plug-and-play fit for my 2004 Cadillac XLR. Communication was top-notch throughout the process.