Restore Peak Performance to Your General Motors Vehicle
Is your vehicle suffering from a persistent check engine light, erratic engine behavior, or a no-start condition? These are classic signs of a failing Engine Control Module (ECM), the central computer responsible for managing your engine’s performance, fuel efficiency, and emissions. A faulty ECM can cause a cascade of frustrating and potentially damaging issues. This genuine, used GM ECM 12669908 is the reliable and cost-effective solution to get your vehicle running smoothly again.
Unlike a generic module from a local parts store, this unit is professionally programmed to your vehicle’s specific Vehicle Identification Number (VIN) before it ships. We install the latest official GM calibrations, ensuring that all systems communicate correctly and your engine operates exactly as the manufacturer intended. This critical programming step eliminates the need for an expensive trip to the dealership for software flashing, saving you significant time and money.
Common Symptoms of a Failing ECM
- ✔ Persistent Check Engine Light (CEL) with various trouble codes
- ✔ Engine stalling, stumbling, or misfiring
- ✔ Drastic decrease in fuel economy
- ✔ Vehicle won’t start or is difficult to start
- ✔ Shifting problems with automatic transmissions
- ✔ Loss of power and poor acceleration
- ✔ Communication errors with diagnostic scan tools
The Smart Solution: A VIN-Programmed GM ECM 12669908
Choosing this pre-programmed ECM is the most efficient way to resolve your vehicle’s issues. We take a high-quality, tested, used OEM module and flash it with the correct, updated software for your exact car using your VIN. This ensures compatibility and proper function of all related systems. The part you receive is ready for installation and the subsequent security relearn procedure, putting you back in control of your repair.
Critical Installation Information
Please be aware that upon installing this module, a Vehicle Theft Deterrent (VTD) relearn procedure is almost always necessary. This is a standard security measure on all modern GM vehicles that pairs the new ECM to your car’s anti-theft system. If this procedure is not performed, the vehicle will not start. This relearn must be done using a professional-grade scan tool with access to GM’s TIS2Web programming system. Additionally, other system initializations, such as a crankshaft position variation relearn or injector flow rate programming, may be required depending on your specific vehicle. It is the responsibility of the installer to perform any and all necessary relearn and setup procedures.
This module with service number 12669908 is a direct fit for a wide range of vehicles, including:
- Chevrolet Volt (2017-2018)
- Chevrolet Equinox (2018-2019)
- Chevrolet Malibu (2017-2018)
- Chevrolet Cruze (2017-2018)
- Cadillac ATS (2017)
- Cadillac CTS (2017)
- Buick Regal (2018)
- Buick LaCrosse (2018)
- GMC Acadia (2017-2018)
Always verify that your original module’s service number matches 12669908 to ensure correct fitment.
Frequently Asked Questions
What is an ECM and what does it do?
The Engine Control Module (ECM) is your vehicle’s main computer. It controls critical functions like fuel injection timing, spark timing, idle speed, and emissions systems to ensure the engine runs efficiently and reliably.
Is this part plug-and-play?
No. While we program the module to your VIN, you will still need to perform a security relearn procedure (and potentially other relearns) upon installation. This requires a compatible professional scan tool. Without this step, your vehicle will not start.
How do I provide my VIN?
After you complete your purchase, please send us a message with your 17-digit Vehicle Identification Number (VIN). We cannot program and ship your ECM without it.
What is a ‘theft relearn’ and why is it needed?
The theft relearn, or Vehicle Theft Deterrent (VTD) relearn, is a security procedure that syncs the new ECM with your vehicle’s ignition keys and anti-theft system. It’s a required step to prove the new module belongs to the vehicle, allowing it to start.
This is a used part. Is it reliable?
Yes. We source these from salvaged vehicles and each unit is inspected and tested to ensure it is fully functional before being programmed and shipped. It’s a genuine OEM part, which often provides superior reliability compared to aftermarket alternatives.
Will this fix my car’s problem for sure?
This part will fix your vehicle if the ECM has been correctly diagnosed as the point of failure. It’s crucial to have a proper diagnosis performed by a qualified technician, as other issues (like wiring or sensor faults) can mimic ECM symptoms.