Is Your Vehicle Running Rough? The Engine Control Module Could Be the Culprit.
If your Buick Regal, Cadillac CTS, Chevy Equinox, or other compatible GM vehicle is experiencing perplexing issues like a persistent check engine light, erratic idling, stalling, poor fuel economy, or a no-start condition, the problem may lie with a faulty Engine Control Module (ECM). As the central computer for your engine, the ECM manages everything from fuel injection and ignition timing to emissions controls. When it fails, it can cause a cascade of performance problems that can be difficult to diagnose.
The Direct-Fit Solution: A VIN-Programmed ECM
Don’t let a failing computer keep you off the road. This Engine Control Module, part number 12637106, is the reliable and effective solution to restore your vehicle’s performance and drivability. We take the guesswork out of the repair by programming the module specifically to your vehicle’s Vehicle Identification Number (VIN) before it ships. This ensures that the computer has the latest GM software updates and is calibrated to the exact specifications of your car, truck, or SUV. The result is a simplified installation process, often referred to as “plug-and-play,” that gets your vehicle back to factory-spec operation.
From the Diagnostic Bay
We had a 2011 Chevy Equinox come into the shop with a list of bizarre, intermittent symptoms. The customer complained of random stalling at stoplights, a check engine light that would come and go with no consistent codes, and a noticeable hesitation during acceleration. We checked the fuel system, ignition components, and wiring harnesses, but everything tested fine. After hours of diagnostics, we focused on the ECM. On a hunch, we swapped in a known-good, programmed module. The change was immediate. The engine idled smoothly, the hesitation was gone, and the phantom codes never returned. It was a classic case of a failing processor inside the ECM causing unpredictable behavior that standard tests couldn’t pinpoint. This is why a quality, correctly programmed replacement is so critical.
Symptoms of a Failing Engine Control Module
A failing ECM can manifest in many ways. If you’re noticing any of the following, it’s time to consider a replacement:
- ✔ Persistent Check Engine Light (CEL) on your dashboard.
- ✔ Engine stalling or misfiring for no apparent reason.
- ✔ Noticeable decrease in fuel efficiency.
- ✔ Rough or unstable idling.
- ✔ Difficulty starting the engine or a complete no-start condition.
- ✔ Hesitation or stumbling during acceleration.
- ✔ Transmission shifting issues or harsh shifts.
- ✔ Communication errors with diagnostic scan tools.
Why Choose Our Programmed 2011 Regal ECM?
Replacing an ECM isn’t just about swapping a part; it’s about restoring the brain of your vehicle’s powertrain. Our process ensures you receive a fully functional and compatible module. Upon purchase, you simply provide us with your vehicle’s VIN. Our technicians then use this information to flash the module with the correct, up-to-date software directly from GM. This critical step ensures all systems communicate properly, from the engine and transmission to the anti-lock brakes and security system. This module is a direct replacement for multiple part numbers, including 12616889, 12630908, 12637106, 12642665, 12650256, and 12651993, offering broad compatibility across a wide range of GM models.
Installation Note
While this module is programmed for your vehicle, some GM models may require a simple security relearn procedure after installation. This procedure pairs the new ECM to your vehicle’s anti-theft system and can typically be performed by the owner in a few minutes without any special tools. Instructions are widely available online, or your local mechanic can perform it quickly.
Frequently Asked Questions
What is VIN programming and why is it necessary?
VIN programming is the process of loading your vehicle’s specific software and calibration files onto the ECM. It’s necessary because it ensures the module works correctly with your engine, transmission, and all other vehicle options. Without it, the vehicle may not start or run properly.
How do I provide my VIN?
After you complete your purchase, you can send us your 17-digit VIN through the order messaging system or in the notes section of your order. We cannot ship the module until we have this information.
Is this a direct replacement for my original part?
Yes, this ECM is a direct-fit replacement for the part numbers listed, including 12637106, 12616889, 12630908, and others. Please check the extensive fitment list to confirm it matches your specific make, model, and year.
Will I need to do anything else after installing this ECM?
In many cases, it is a plug-and-play installation. However, some vehicles may require a security relearn procedure (also known as a key relearn or anti-theft relearn) to sync the new ECM with your keys. This is a simple procedure you can often do yourself.
Does this part come with a warranty?
Yes, all our electronic modules come with a standard warranty. Please refer to the warranty tab on the product page for specific details and duration of coverage.