Is Your GM Vehicle Running Rough, Stalling, or Refusing to Start?
A failing Engine Control Module (ECM) can be the source of immense frustration, turning your reliable vehicle into an unpredictable source of stress. If you’re experiencing baffling electrical issues, a persistent check engine light, or poor engine performance, you’ve come to the right place. This genuine GM Engine Control Module, service number 12669908, is the definitive solution to restore your vehicle’s factory performance and your confidence on the road.
Common Symptoms & Your Solution
When an ECM begins to fail, it can trigger a wide range of symptoms that are often misdiagnosed, leading to costly and unnecessary repairs. This module is the direct fix for issues like:
- Complete no-start or intermittent starting problems
- Engine stalling, sputtering, or misfiring
- Poor fuel economy and reduced engine power
- Check Engine Light (CEL) with communication-related Diagnostic Trouble Codes (DTCs) like U0100
- Erratic transmission shifting or other electronic module malfunctions
Instead of paying exorbitant dealership prices for a new module and programming, this unit provides a smart, cost-effective alternative. We take a quality, used OEM computer and flash it with the latest official GM software, precisely matched to your vehicle’s VIN. This ensures perfect compatibility and function right out of the box. This is the most reliable way to solve your vehicle’s core electronic issues and get it running perfectly again. For a wide range of vehicles, this 2017-2021 Colorado ECM 12669908 is the correct component to restore full functionality.
Features & Benefits
- ✔ VIN-Programmed for Your Vehicle: Arrives flashed with the latest GM calibrations for your specific car or truck. No dealer visit for programming is required, saving you hundreds of dollars and significant time.
- ✔ OEM Quality & Reliability: This is a genuine, road-tested GM part, not a low-quality aftermarket alternative. It’s designed to meet the exact specifications of your vehicle for flawless performance.
- ✔ Cost-Effective Solution: Get the performance and reliability of an original equipment part at a fraction of the cost of a new unit from the dealership.
- ✔ Broad GM Compatibility: While this is a perfect fit for many models, the 2017-2021 Colorado ECM 12669908 is a versatile module used across numerous GM cars and SUVs. See the detailed fitment list to confirm for your vehicle.
- ✔ Direct-Fit Replacement: Matches service number 12669908, ensuring a perfect physical and electronic fit for a straightforward installation process.
- ✔ Peace of Mind: This unit is backed by our one-year replacement warranty.
From the Technician’s Bench: The Hidden Cost You’re Avoiding
As a technician, I’ve seen countless vehicle owners get hit with a massive bill at the dealership for an ECM replacement. The cost isn’t just the part itself; it’s the hours of diagnostic time, the mandatory programming fees using their proprietary system, and the general shop overhead. Our service cuts right through that. By programming the module to your VIN before it even ships, we handle the most complex part of the job for you. You’re not just buying a part; you’re buying a streamlined solution that puts you back in control of the repair process and your budget. This is the professional-grade fix without the professional-grade price tag.
This 2017-2021 Colorado ECM 12669908 is your path to resolving complex engine management problems efficiently. After purchase, simply provide us with your vehicle’s VIN, and we’ll handle the programming. Please note that upon installation, some vehicles may require a simple security or “theft relearn” procedure, as well as other potential system initializations like crankshaft variation or injector flow rate programming. This is a standard part of the process and is the responsibility of the installer.
Frequently Asked Questions
How do I provide my VIN number?
After you complete your purchase, you will receive instructions on how to send us your vehicle’s 17-digit VIN. We cannot program and ship your module until we receive this information.
Is this a new part?
No, this is a high-quality, used OEM Engine Control Module that has been carefully sourced from a salvaged vehicle, inspected, and is ready to be programmed for its next service life.
What is a ‘theft relearn’ and will I have to do it?
A theft relearn, or security relearn, syncs the new ECM with your vehicle’s anti-theft system. On many GM vehicles, if the car doesn’t start after installation, this procedure is required. It must be performed by the installer using the proper GM programming tools, such as TIS2WEB. It is the end user’s responsibility to have this completed if necessary.
Will this fix my check engine light?
If the check engine light and associated symptoms are caused by a faulty ECM, this part is the correct solution. It’s crucial to have the vehicle properly diagnosed to confirm the ECM is the point of failure before ordering.
Does this part fit other vehicles besides the Colorado?
Yes. The service number 12669908 is used in a wide variety of GM vehicles, including the Equinox, Malibu, Cruze, Acadia, ATS, and more. Please check the detailed fitment list on this page to confirm compatibility with your specific year, make, and model.