Restore Peak Performance to Your GM Vehicle
Is your truck or car running rough, throwing a check engine light, or refusing to start? The Engine Control Module (ECM), often called the engine’s brain, is responsible for managing everything from fuel injection and ignition timing to emissions controls. When it begins to fail, it can cause a cascade of frustrating and difficult-to-diagnose issues. This direct-fit Engine Control Module, part number 12692200, is the definitive solution for a wide range of GM vehicles, including the workhorse 2012-2016 GMC Sierra and Chevrolet Silverado trucks.
Unlike a generic part from a local store, this module isn’t just a piece of hardware. It’s a complete solution. We professionally program the module with the latest GM-certified software updates specifically for your vehicle using the VIN you provide. This critical step ensures seamless communication with all other vehicle systems, proper engine function, and adherence to factory specifications. This plug-and-play approach saves you a trip to the dealership and the high costs associated with their programming services.
From the Diagnostic Bay
We had a 2014 Silverado 2500 with the 6.0L V8 come into the shop with an intermittent stalling problem and a P0606 (ECM/PCM Processor Fault) code. The owner had already replaced the throttle body and mass air flow sensor with no success. After verifying power and ground to the module, we knew the internal processor was failing. A standard replacement would have required the truck to be towed to a dealer for programming. Instead, we installed one of our VIN-programmed modules. The entire process, including the necessary security relearn, took under an hour in our bay. The truck started immediately, idled perfectly, and the fault codes were gone for good. It’s a testament to how a correctly prepared part can save immense time and frustration.
Is Your Sierra 3500 Engine Control Module Failing?
A faulty ECM can manifest in numerous ways, often mimicking other sensor or component failures. If you’re experiencing any of the following, a failing computer could be the root cause. This part is designed to correct these exact problems, restoring the reliability and drivability you depend on.
Common Symptoms of a Bad ECM
- ✔ Unexplained Check Engine Light (CEL) illumination
- ✔ Engine stalling or shutting off while driving
- ✔ Rough or erratic idling
- ✔ Noticeable decrease in fuel economy
- ✔ Engine misfires or hesitation during acceleration
- ✔ Complete no-start condition where the engine cranks but won’t fire
- ✔ Communication errors with diagnostic scan tools
- ✔ Automatic transmission shifting issues
Guaranteed Compatibility and Simple Installation
This module is a direct replacement for a variety of original equipment part numbers, including 12668866, 12668994, 12643636, and more. We handle the complex part of the job—the programming. Once you receive the module, installation is straightforward. Simply disconnect the battery, swap the old module with the new one, and reconnect the battery. For many vehicles, a simple security relearn procedure (often called a ‘key cycle’) is all that’s needed to get you back on the road. We provide clear instructions to guide you through this final step.
Please provide your vehicle’s 17-digit VIN at checkout to ensure we can program the module for a perfect match before shipping.
Wide-Ranging Fitment Across the GM Lineup
While this is a key part for the Sierra 3500 Engine Control Module, its versatile architecture allows it to be the correct component for many other vehicles. Please verify your part number and check the list below for confirmed applications:
- Buick Encore: 2013-2016 (1.4L)
- Cadillac ELR: 2014-2016
- Chevrolet Cruze: 2012-2016 (Gasoline)
- Chevrolet Express 2500/3500 Van: 2016 (4.8L, 6.0L)
- Chevrolet Silverado 2500/3500 Pickup: 2012-2016 (6.0L)
- Chevrolet Sonic: 2012-2016
- Chevrolet Spark: 2014-2015 (Gasoline)
- Chevrolet Suburban 3500: 2016
- Chevrolet Trax: 2013-2016
- Chevrolet Volt: 2011-2015
- GMC Savana 2500/3500 Van: 2016 (4.8L, 6.0L)
- GMC Sierra 2500/3500 Pickup & Denali: 2012-2016 (6.0L)
Frequently Asked Questions
Do I need to do any programming myself?
No. We handle all the programming before the part is shipped to you. We use your vehicle’s VIN to load the correct GM software and updates. The only thing you may need to perform is a simple security relearn procedure, which we provide instructions for. This does not require any special tools.
What is the security relearn procedure?
The security relearn, or anti-theft relearn, syncs the new ECM with your vehicle’s existing security system and keys. For most GM vehicles, this involves a simple ‘key cycle’ procedure that takes about 30 minutes. It typically involves turning the key to the ‘ON’ position for 10 minutes, then ‘OFF’, and repeating this process three times.
How do I provide my VIN?
You can add your 17-digit Vehicle Identification Number (VIN) in the notes section during checkout. If you forget, we will contact you via email to request it. We cannot ship your module until we have the VIN to program it.
Is this a new or used part?
This is a high-quality, inspected, and tested original equipment part that has been professionally prepared for its next service life. Each unit is verified to be fully functional before being programmed and shipped.
Will this fix my specific check engine light codes?
This ECM is the correct solution for codes related to internal module failure, such as P0601, P0606, or other processor faults. It can also resolve issues caused by faulty injector or ignition coil drivers within the module. However, it’s always essential to properly diagnose your vehicle, as codes can sometimes point to wiring or sensor issues outside of the ECM itself.