Restore Peak Performance to Your Vehicle’s Engine
The Engine Control Module (ECM), often called the engine’s brain, is the central command center for your vehicle’s most critical functions. It meticulously manages fuel injection, ignition timing, emissions systems, and transmission shifting to ensure optimal power, efficiency, and reliability. When the ECM begins to fail, it can lead to a cascade of frustrating and difficult-to-diagnose problems, from a simple check engine light to a vehicle that won’t start at all. This replacement Engine Control Module, part number 12663405, is the definitive solution for a wide range of GM vehicles, including the 2013-2016 Chevrolet Trax.
Is Your Engine Control Module Failing?
A faulty ECM can manifest in numerous ways, often mimicking other component failures. If you’re experiencing any of the following issues, a failing computer could be the root cause. Proper diagnosis is key, but these are strong indicators that your module needs attention.
From the Diagnostic Bay
We had a 2015 Chevy Cruze come in with a truly baffling issue. The owner reported random stalling at stop lights and an intermittent no-start condition that left them stranded twice. They had already replaced the battery and spark plugs with no success. Our initial scan showed a handful of communication error codes with various modules. After meticulously checking the wiring harness and power/ground connections to the ECM, we found no faults. The evidence pointed to an internal failure within the original ECM. We installed one of our VIN-programmed modules, and the car started instantly. After a test drive, all the intermittent stalling and communication faults were gone. It’s a classic case of how a failing ECM can create phantom problems that seem unrelated.
Common Symptoms of a Failing ECM
- ✔ Persistent Check Engine Light (CEL) that won’t clear or returns immediately.
- ✔ Engine stalling, stumbling, or misfiring for no apparent reason.
- ✔ A sudden and unexplained drop in fuel economy.
- ✔ Complete no-start or difficult hard-starting conditions.
- ✔ Erratic or harsh automatic transmission shifting.
- ✔ Loss of power and poor acceleration.
- ✔ Inability for a scan tool to communicate with the engine computer.
The Plug-and-Play Solution: Why Our 2013-2016 Trax ECM is the Right Choice
Replacing an ECM isn’t just about swapping hardware. The software is just as important. Our service eliminates the most difficult part of the job: programming. Before we ship your part, our technicians will flash the module with the latest, most stable GM-certified software specifically for your vehicle. All we need is your Vehicle Identification Number (VIN). This ensures that the ECM is perfectly calibrated for your engine, transmission, and factory options, restoring its original performance and efficiency.
This module is a direct replacement for a variety of part numbers, including: 12668866, 12668994, 12643636, 12663405, 12670335, 22819494, and 12692200. It offers broad compatibility across the GM lineup, including popular models like the Chevy Cruze, Sonic, Spark, Volt, Buick Encore, and heavy-duty trucks like the Silverado and Sierra 2500/3500 with the 6.0L engine. By ordering from us, you avoid expensive dealership programming fees and lengthy service appointments.
Installation Note
Thanks to our VIN programming service, this module is ready for installation upon arrival. Simply disconnect your vehicle’s battery, replace the old module, and reconnect the battery. In some vehicles, a simple security relearn procedure or a Crankshaft Position Sensor (CASE) relearn may be required to clear certain trouble codes. These procedures can be performed with most professional-grade scan tools.
Frequently Asked Questions
Do I need to have this module programmed by a dealer?
No. We handle all the programming for you before shipment. We use your vehicle’s VIN to load the correct GM software and updates, making it ready to install right out of the box.
How do I provide my VIN?
After you complete your purchase, you can send us a message with your 17-digit VIN. We will not ship the part until we receive the VIN to ensure perfect compatibility.
Is this a simple plug-and-play installation?
For most vehicles, yes. However, some models may require a security relearn or CASE relearn procedure to sync with your vehicle’s anti-theft system and crankshaft sensor. This is a standard procedure that can be completed with a capable scan tool.
My original part number is different. Will this still work?
Yes. This ECM is a direct replacement for multiple GM part numbers, including 12668866, 12668994, and 12643636, among others. As long as your vehicle model and year are on our compatibility list, we will program it to function perfectly.
What if this doesn’t fix my problem?
This part is guaranteed to fix any issues directly caused by a faulty ECM. It’s crucial to have your vehicle properly diagnosed by a professional to confirm the ECM is the point of failure before ordering.