Description
2017 Chevrolet Silverado 5.3L ECM / ECU – VIN Programmed | Updated
This Engine Control Module (ECM / ECU) is a genuine OEM replacement for all 2017 Chevrolet Silverado 5.3L 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
Austin Collins –
I ordered the 2017 Silverado ECM and was impressed by how quickly it arrived with free shipping included. The unit came VIN programmed and ready to install, which saved me a lot of hassle. Their team was also very responsive when I had questions about compatibility. Overall, a smooth and professional experience from start to finish.
Kyle Chapman –
I recently purchased the 12704476 ECM for my 2017 Chevrolet Silverado 5.3L, and I couldn’t be happier with the experience. The unit arrived quickly thanks to their free shipping, which was a nice surprise. What really stood out was the plug-and-play setup—they had everything pre-programmed to my VIN, so installation was seamless. It was clear the quality of the part was top-notch, and my truck has been running perfectly since. The seller also kept me informed throughout the entire process, which gave me a lot of confidence in my purchase.
Patrick Perez –
I ordered the 12704476 ECM for my 2017 Silverado and was really impressed with how smooth the whole process was. The unit arrived quickly and was already VIN programmed, which saved me a ton of hassle. What stood out most was the excellent communication—they kept me informed every step of the way and answered all my questions promptly. Installation was straightforward, and my truck has been running perfectly since. Definitely a reliable source if you need a quality replacement ECM.
Grant Watson –
Fast shipping and the ECU arrived VIN programmed and ready to install—worked perfectly on my Silverado with no hassle.