Restore Your Vehicle’s Brain and Get Back on the Road
Is your GM vehicle running erratically, refusing to start, or showing a persistent check engine light that won’t go away? A faulty Engine Control Module (ECM) can bring your daily drive to a frustrating halt, leaving you stranded and facing a costly dealership repair. This professionally programmed Engine Control Module, service number 12669908, is your direct, reliable, and cost-effective solution to get your car, truck, or SUV running smoothly again.
Common Symptoms of a Failing ECM & Your Direct Solution
A failing ECM can manifest in numerous ways, often mimicking other sensor failures and leading to frustrating, dead-end repairs. If you’re experiencing any of the following, your ECM is the likely culprit:
- No-Start Condition: The engine cranks but refuses to start, even with a good battery and fuel supply.
- Erratic Performance: Unexplained stalling, rough idling, hesitation during acceleration, or sudden loss of power.
- Poor Fuel Economy: A sudden and significant drop in your vehicle’s gas mileage.
- Check Engine Light with Communication Codes: Diagnostic Trouble Codes (DTCs) like U0100 (Lost Communication With ECM/PCM) are a strong indicator of module failure.
- Component Failures: Issues with ignition coils, fuel injectors, or cooling fans operating incorrectly can often be traced back to a faulty ECM driver circuit.
This genuine, used GM Engine Control Module is the definitive solution. We don’t just send you a part from a shelf; we provide a fully prepared component. By using the VIN you provide, we flash this unit with the latest, most stable software calibrations directly from GM. This ensures that when you install our Programmed 12669908 ECM, it communicates perfectly with the other modules in your vehicle, restoring factory performance and reliability.
Features & Benefits
- ✔ VIN-Programmed for Your Vehicle: We flash this module with your car’s specific Vehicle Identification Number (VIN) and the latest GM-certified software. This critical step ensures seamless integration and eliminates the need for expensive dealership programming.
- ✔ A Smart, Economical Repair: Get a reliable, tested component prepared for your vehicle at a fraction of the cost of a new module from a dealer.
- ✔ Thoroughly Inspected and Verified: Sourced from a salvaged vehicle, each module is carefully inspected to ensure it’s free from physical damage and ready for service in your car.
- ✔ Solves Complex Electrical Issues: This is the core component that manages engine timing, fuel delivery, and emissions. Replacing a faulty one is the key to resolving a host of drivability problems.
- ✔ One-Year Replacement Warranty: This unit is backed by our one-year replacement warranty, giving you confidence and protection in your purchase.
Expert Insight: Why VIN Programming is Non-Negotiable
Think of your vehicle’s ECM as the central computer in a complex network. A used module from a junkyard is like a locked computer with someone else’s password—it simply won’t work in your car. It contains the security information (VIN) and specific operating parameters from its original vehicle. Our VIN programming service is the essential ‘key’ that unlocks the module, allowing it to communicate with your vehicle’s Body Control Module, transmission, and anti-theft system. While a final ‘theft relearn’ is a standard security handshake required on-site by your mechanic, our pre-programming does 90% of the heavy lifting, saving you significant time and diagnostic headaches.
Take control of your repair and restore your vehicle’s performance. By ordering this Programmed 12669908 ECM, you are choosing a proven path to fixing complex issues and getting back behind the wheel with confidence. Please be aware that installation requires a final vehicle theft deterrent relearn and potentially other setup procedures (like crankshaft variation or injector setup) to be completed by a qualified technician with the proper GM diagnostic tools.
Frequently Asked Questions
Do I need to do anything after I install this ECM?
Yes. Upon installation, a vehicle theft deterrent system relearn must be performed by a qualified technician using the GM programming system (tis2web). Depending on your vehicle, other procedures like a crankshaft variation relearn or injector flow rate programming may also be necessary for optimal performance. This is the responsibility of the installer.
How do I provide my vehicle’s VIN?
After you complete your purchase, you will need to send us your 17-digit Vehicle Identification Number (VIN). You can typically add it as a note to your order or reply to your order confirmation email. We cannot program and ship the module without your VIN.
Is this a new part?
No, this is a high-quality, inspected, and tested used part that was sourced from a salvaged vehicle. This allows us to provide a reliable and cost-effective solution for your repair needs.
What if my original part number doesn’t match 12669908 exactly?
GM often uses a single service number (serv. no) to cover multiple original part numbers. As long as your vehicle make, model, year, and engine are on our compatibility list, this Programmed 12669908 ECM is the correct replacement part for your vehicle.
What tools are needed for the final relearn procedures?
The theft relearn and other setups require a professional-grade scan tool with access to GM’s online service software, such as tis2web. This is standard equipment for most professional repair shops and all GM dealerships.
Why is this better than buying a used ECM from a junkyard?
A standard junkyard ECM is not programmed for your specific car. It will not allow the engine to start due to the anti-theft system and incorrect software. Our service includes programming the module to your VIN with the latest updates, which is a complex step that saves you significant time, money, and hassle.