Description
2004 Toyota Tundra 3.4L ECM / ECU – VIN Programmed | Updated
This Engine Control Module (ECM / ECU) is a genuine OEM replacement for all 2004 Toyota Tundra 3.4L 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
Henry Perez –
I ordered the 2004 Toyota Tundra ECM for my 3.4L and was really impressed with the professional programming service they provided. The ECU arrived completely VIN programmed and ready to install, which saved me a lot of hassle. Shipping was quick and reasonably priced, and I felt confident throughout the process thanks to their prompt responses to my questions. Overall, a seamless experience from start to finish.
Spencer Bates –
I needed a replacement ECM for my 2004 Toyota Tundra, and this one arrived exactly as described, fully VIN programmed and ready to go. The shipping was surprisingly fast and free, which made the whole process even smoother. Installation was straightforward thanks to the plug-and-play setup they offer—no extra programming on my end. I really appreciated how the team kept me informed from order to delivery. The truck has been running perfectly since, so I’m very happy with the quality and service overall.
Austin Perez –
I was really impressed with how smooth the whole process went with this 2004 Toyota Tundra ECM. The unit arrived quickly and was already VIN programmed, so installation was completely plug-and-play—no extra trips to a mechanic for programming, which saved me a ton of hassle and money. The shipping was fast and really affordable, which made the purchase even better. The seller kept me informed every step of the way, responding promptly to my questions and making me feel confident about what I was buying. Since installing this ECM, my truck runs flawlessly, and I couldn’t be happier with the quality and service.
Adrian Hill –
Fast shipping and the plug-and-play programming made replacing my Tundra’s ECM a breeze—highly recommend!