Restore Peak Performance to Your GM Truck or Car
Is your 2014-2016 Sierra Denali 1500, Silverado, or other compatible GM vehicle suffering from frustrating engine problems? A faulty Engine Control Module (ECM) is often the culprit behind issues like a persistent check engine light, poor fuel economy, rough idling, or even a no-start condition. The ECM is the central computer of your engine, managing everything from fuel injection and ignition timing to transmission shifting. When it fails, the entire vehicle’s performance and reliability are compromised. This genuine GM ECM, part number 12673195, is the definitive solution to get your vehicle running like new again.
Symptoms of a Failing Engine Control Module
Diagnosing an ECM issue can be tricky, as its symptoms can mimic other component failures. However, if you’re experiencing several of the following problems, your module is a likely suspect:
- ✔ Persistent Check Engine Light (CEL) that won’t clear, often with communication-related or random misfire codes.
- ✔ Unexplained drop in fuel mileage.
- ✔ Engine stalling, stumbling, or hesitating during acceleration.
- ✔ Rough or erratic idling.
- ✔ Harsh or incorrect transmission shifting.
- ✔ Intermittent starting problems or a complete no-start condition.
- ✔ Performance issues that mechanics can’t solve by replacing sensors or ignition components.
From the Diagnostic Bay
We had a 2015 Silverado 1500 in the shop that was driving the owner crazy. It had a random cylinder 3 misfire code (P0303) that would appear intermittently. The owner had already replaced the spark plug, ignition coil, and fuel injector, but the problem persisted. After exhausting all mechanical possibilities, we hooked up our diagnostic tools and monitored the injector driver signals coming from the ECM. We found the signal for cylinder 3 was dropping out unpredictably. We replaced the original module with a pre-programmed unit like this one, and the truck ran perfectly. It wasn’t a mechanical issue at all; it was a failing driver inside the original computer.
The Plug-and-Play Solution for Your 2014-2016 Sierra Denali ECM
The biggest hurdle in replacing an ECM has always been the expensive and time-consuming programming required at a dealership. We eliminate that step completely. When you order this module from us, you simply provide your vehicle’s 17-digit Vehicle Identification Number (VIN) during checkout. Our certified technicians will then flash the module with the latest, most up-to-date official GM software for your specific vehicle. This ensures perfect compatibility and optimal performance right out of the box. Your new 2014-2016 Sierra Denali ECM will arrive ready for a straightforward installation, saving you hundreds of dollars in dealer programming fees and towing costs.
This module is a direct replacement for a wide range of GM vehicles and supersedes multiple part numbers, including 12692067, 12676230, 12656993, 12662034, 12672537, 12663391, 12672963, and 12669318. While it’s a perfect fit for the 2014-2016 Sierra Denali ECM, it’s also the correct module for many Cadillac, Chevrolet, and GMC models such as the Corvette, Camaro, Escalade, Tahoe, Yukon, and Colorado. Please verify the part number on your existing module or consult the detailed fitment list to ensure compatibility.
Frequently Asked Questions
Do I need to have this ECM programmed by a dealer?
No. This is the primary benefit of our service. We program the module to your vehicle’s specific VIN before we ship it. It arrives ready for installation, saving you a trip to the dealership and their associated programming fees.
What information do you need from me?
We only need your vehicle’s 17-digit VIN. You can typically find this on your dashboard (visible through the windshield on the driver’s side), on your vehicle’s registration, or on the driver’s side door jamb sticker.
Is this a true plug-and-play installation?
Yes, for the vast majority of vehicles. After physically installing the module, some GM vehicles may require a simple, tool-free security relearn procedure or an idle relearn, which involves letting the vehicle idle for a few minutes. Instructions for these simple procedures are widely available online or in service manuals.
Will this fix my specific problem or check engine light?
If your vehicle’s issues have been correctly diagnosed as a faulty ECM, this part is the correct solution. It will resolve problems directly caused by the module. However, it will not fix issues related to other faulty sensors, wiring, or mechanical components. We always recommend a thorough diagnosis before ordering.
How do I confirm this is the right part for my vehicle?
The best way is to match the part number from your old ECM to one of the compatible numbers listed (12673195, 12692067, etc.). You can also use the fitment guide provided on this page. If you are still unsure, please contact us with your VIN, and we’ll be happy to verify fitment for you.
Where is the ECM located on my truck?
On most 2014-2016 GM trucks like the Sierra and Silverado, the ECM is located in the engine compartment on the driver’s side, near the front of the vehicle. It’s a silver metal box with several large electrical connectors.