Description
2017 GMC Sierra 5.3L ECM / ECU – VIN Programmed | Updated
This Engine Control Module (ECM / ECU) is a genuine OEM replacement for all 2017 GMC Sierra 5.3L models.
Each unit is VIN-programmed, updated, and fully tested.Built to OEM standards for reliability, calibration accuracy, and long-term performance.
Strict Testing & Quality Assurance
This is not a brand-new unit. It is a rebuilt unit that is inspected, refreshed, and fully tested before shipping.
Testing includes communication, CAN-bus, sensor signal, power circuit, flash memory, and reliability checks.
Important Note
If your vehicle does not have an IMMO or PATS system, this unit will be directly plug&play.
If your vehicle has an IMMO or PATS system, it will require a key relearn after installation. You can visit your local locksmith for help.
We also offer a full cloning service. We transfer all security data to the replacement unit, so it will be a plug&play installation.
For all European cars, Hyundai, and Kia vehicles, we recommend adding our cloning service as a bundle.
For American and Japanese cars, we recommend doing a key relearn on-site.
Contact Us
Email: info@fixecm.com
Phone: Local: 647-247-8555 | Toll-Free: 1-800-915-5566




Kyle Wright –
The ECM arrived quickly with free shipping and was already programmed for my 2017 GMC Sierra, making installation a breeze. Communication was spot-on, and they answered all my questions promptly.
Benjamin King –
I purchased the 12686382 ECM for my 2017 GMC Sierra and was really impressed with how quickly it arrived. The unit was fully VIN programmed and literally plug-and-play, making the installation straightforward and hassle-free. The customer service team was very responsive and helped ensure everything was set up correctly. Choosing this option saved me a significant amount over dealer pricing, and my truck runs perfectly now.
Elijah Adams –
Fast shipping and the unit was truly plug-and-play—saved me a ton versus dealer prices. Installation was painless and the communication was spot on.
Steven Hudson –
I was impressed with how quickly this 2017 GMC Sierra ECM arrived, especially since the shipping cost was very reasonable. The unit was already VIN programmed, which made installation straightforward and hassle-free. The team also responded promptly to my questions, keeping me informed throughout the process. Overall, the quality and service exceeded my expectations.