Description
2004 Chevrolet Silverado 4.8L ECM / ECU – VIN Programmed | Updated
This Engine Control Module (ECM / ECU) is a genuine OEM replacement for all 2004 Chevrolet Silverado 4.8L 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
Benjamin Brown –
I ordered the 2004 Chevrolet Silverado 4.8L ECM and was really impressed by how smoothly everything went. The unit arrived quickly with free shipping, which was a nice bonus. They provided professional VIN programming, so it was basically plug-and-play once I installed it. Communication was clear throughout the process, and they answered all my questions promptly, making the whole experience hassle-free.
Caleb Lawrence –
I was really impressed with how smoothly everything went with this ECM for my 2004 Silverado. The unit arrived quickly and the shipping cost was very reasonable, which was a nice bonus. What stood out the most was the professional programming service they provided—plugging it in was seamless, and the truck fired right up without any issues. I also appreciated how they kept me in the loop throughout the process, answering my questions promptly whenever I reached out. Overall, it felt like dealing with true experts who know their stuff.
Jack Murray –
I was really impressed with the purchase of this 2004 Chevrolet Silverado ECM. The fact that it came VIN programmed made installation so straightforward—just plug and play, no hassle at all. Shipping was surprisingly fast and very affordable, which was a nice bonus. Throughout the process, the seller kept me informed and answered all my questions promptly, making me feel confident about my purchase. My truck runs smoothly now, and I couldn’t be happier with the quality and service.
Dean Keller –
Received my 2004 Silverado ECM quickly with free shipping, and it was perfectly programmed for my VIN—super smooth plug-and-play experience.
The programming service was spot on, and their team answered all my questions promptly, making the whole process hassle-free.
Fast turnaround and the updated ECM works flawlessly; shipping was very reasonable too, which was a nice bonus.
Great communication throughout, and the unit arrived ready to install with no issues—highly recommend for anyone needing a reliable PCM.
Super impressed with the quality and how quickly they got my ECM to me, plus the shipping cost was surprisingly low.