Is Your GMC Yukon Experiencing Frustrating Engine Problems?
A faulty Engine Control Module (ECM), the brain of your vehicle’s engine, can be the source of numerous performance issues that are often difficult to diagnose. If your 2015 or 2016 GMC Yukon is suffering from poor fuel economy, intermittent stalling, a persistent check engine light, or a complete no-start condition, the ECM could be the culprit. Replacing it shouldn’t mean a costly trip to the dealership, a long wait, and expensive programming fees. This is your direct-fit, ready-to-install solution to get your truck running like new again.
This genuine OEM Engine Control Module, part number 12669318, is the definitive fix for a failing computer. We take the hassle out of the repair process by programming the module specifically to your vehicle’s VIN before it ships. This means it arrives at your door with the latest, most stable software updates from GM, ensuring optimal performance, fuel efficiency, and emissions control. It’s a true plug-and-play solution that eliminates the need for specialized tools or a trip to the dealer for programming.
From the Diagnostic Bay
We had a 2015 Yukon come into the shop with a ghost of a problem. The owner complained of random stalling at stoplights and a hesitation when accelerating, but there were no consistent trouble codes. We checked fuel pressure, sensors, and wiring harnesses for days. Finally, on a hunch, we monitored the ECM’s live data stream and noticed the processor would occasionally drop communication for a split second—just long enough to cause a hiccup but not long enough to set a hard code. We swapped in a VIN-programmed ECM like this one, and the Yukon ran perfectly. It’s a reminder that when all the mechanical parts check out, the computer itself can be the source of the most elusive issues.
Symptoms of a Failing ECM & Key Product Features
- ✔ Check Engine Light: Your check engine light is illuminated, often with communication-related or processor fault codes.
- ✔ Engine Stalling or Misfiring: The engine may stall unexpectedly, run rough, or misfire as the ECM fails to properly manage fuel and spark.
- ✔ Poor Performance & Fuel Economy: A noticeable drop in power, acceleration, and miles per gallon is a common symptom.
- ✔ No-Start Condition: In severe cases, the vehicle may crank but refuse to start because the ECM isn’t controlling the fuel injectors or ignition system.
- ✔ VIN-Programmed for Your Vehicle: This module is not a blank slate. We flash it with your Yukon’s specific VIN and the latest GM software for a seamless installation.
- ✔ Direct OEM Replacement: Guaranteed to fit and function exactly as the original part, restoring factory performance and reliability.
- ✔ Broad Compatibility: Replaces a wide range of part numbers including 12692067, 12676230, 12656993, and more, fitting a variety of GM trucks and SUVs.
Why Our 2015-2016 Yukon ECM is Your Best Solution
When you purchase a 2015-2016 Yukon ECM from us, you are bypassing the most complicated part of the repair. Dealerships can charge hundreds of dollars for programming alone, and that’s on top of the part cost and labor. Our process is simple: you provide us with your vehicle’s 17-digit VIN during or after checkout, and our technicians handle the rest. We use official GM equipment to load the correct software and calibration files for your specific vehicle configuration. This ensures that all systems, from the transmission to the emissions controls, function exactly as the manufacturer intended. The module you receive is ready for immediate installation, often requiring only basic hand tools and a battery disconnect. This saves you time, money, and the headache of towing your vehicle to a service center.
Frequently Asked Questions
Do I need to do any programming or flashing myself?
No. This ECM comes fully programmed to the VIN you provide. It is a plug-and-play installation. In some rare cases, a security or crank position sensor relearn may be required, which can be done with many common scan tools.
Where is the ECM located on my 2015-2016 Yukon?
The Engine Control Module on the 2015-2016 GMC Yukon is typically located in the engine compartment on the driver’s side (LH side), near the front.
What information do you need from me to program the module?
We simply need your vehicle’s 17-digit Vehicle Identification Number (VIN). You can usually find this on your driver’s side dashboard (visible through the windshield), on your door jamb sticker, or on your vehicle’s registration and insurance documents.
Will this fix my check engine light?
If the check engine light and associated codes are caused by a faulty ECM, then this part will resolve the issue. It’s important to ensure a proper diagnosis has been performed, as the light could be on for other reasons (e.g., a bad sensor).
Is this compatible with other GM vehicles?
Yes, this module is compatible with a wide range of GM trucks and SUVs from 2014-2016, including the Silverado, Sierra, Tahoe, Suburban, Escalade, and more. Please check the detailed fitment list to confirm for your specific vehicle.