Description
2015 GMC Sierra 1500 5.3L AT gas ECM / ECU – VIN Programmed | Updated
This Engine Control Module (ECM / ECU) is a genuine OEM replacement for all 2015 GMC Sierra 1500 5.3L AT gas 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 may require key programming after installation. This is normal.
For a 100% plug-and-play solution with no relearns, your original ECU must be sent in for cloning. We transfer all security data to the replacement unit.
👉Add the cloning service as a bundle at checkout — $300 CAD / $215 USD
A prepaid shipping label will be emailed to you.
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
Carlos Morgan –
I was a bit nervous about ordering an ECM for my 2015 GMC Sierra, but this unit arrived quickly and was exactly as described. The fact that it was VIN programmed saved me a ton of hassle, and installation was truly plug-and-play—no complicated steps or extra tuning required. Once installed, my truck fired up smoothly, and all the systems worked perfectly right away. It’s clear this part was tested thoroughly before shipping. I’m really impressed with the quality and the support I received when I had a quick question during installation. Definitely recommend this for anyone needing a reliable replacement ECM!
Mark Hill –
I ordered the VIN programmed ECM for my 2015 GMC Sierra with a bit of hesitation, but it arrived quickly and everything was exactly as advertised. Installation was surprisingly straightforward—no complicated steps or extra tweaking needed, which saved me a lot of time and frustration. Once hooked up, the truck fired right up and ran smoothly, just like it did before. The fit and finish of the unit seemed top-notch, and it’s clear that they put care into these components. Overall, this was a solid purchase that restored my truck to perfect running condition without any hassle. I’m really glad I found this plug-and-play option.
Noah Edwards –
Swapped out my old ECM with this one, and it fired up instantly—no hassle, no headaches. Fast delivery and it fit perfectly!
Connor Hill –
This ECM came exactly as described and was already programmed to my truck’s VIN, which made installation incredibly straightforward. The unit fit perfectly and fired up without any issues right away. Shipping was surprisingly quick, and I appreciated the clear instructions included. Overall, it saved me a lot of time and hassle compared to ordering a generic replacement.