Description
2009 GMC Envoy 4.2L ECM / ECU – VIN Programmed | Updated
This Engine Control Module (ECM / ECU) is a genuine OEM replacement for all 2009 GMC Envoy 4.2L models.
Each unit is VIN-programmed, updated, and fully tested for a true plug-and-play installation with no dealer visit required.
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
This ensures a fully functional, reliable, plug-and-play module you can install with confidence.
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 — $200 CAD / $140 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
Jason Miller –
I was a bit worried about swapping out the ECM on my 2009 GMC Envoy, but this unit made the whole process so much easier than I expected. It came VIN programmed and truly was plug and play—no extra coding or trips to the mechanic required. The shipping was surprisingly fast, which was a lifesaver since I needed my SUV back on the road quickly. Installation took less than an hour, and my truck has been running perfectly ever since. I really appreciate the quality and how hassle-free this replacement part was.
Steven Taylor –
Arrived quickly and worked flawlessly right out of the box—exactly what I needed for my 2009 Envoy.
Super easy install with zero hassle, and the vehicle runs great now!
Perfect fit and programmed to my VIN, saved me a ton of time and headaches.
Fast shipping and no issues plugging it in—highly recommend for anyone replacing their GMC’s ECM.
This unit was spot-on and my Envoy fired up instantly—great value and service!
Jacob Lewis –
The 2009 GMC Envoy ECM arrived quickly and was exactly as described. Installation was straightforward, and it worked perfectly right out of the box with no need for additional programming. I appreciated the clear instructions and the quick response from customer support when I had a couple of questions. Overall, a reliable part that restored my vehicle’s performance seamlessly.