Is your GM vehicle suffering from poor performance, a persistent check engine light, or a no-start condition?
The Engine Control Module (ECM) is the central computer of your vehicle’s powertrain, managing everything from fuel injection and ignition timing to emissions systems. When it fails, it can lead to a wide range of frustrating and difficult-to-diagnose problems. This genuine used GM ECM, service number 12669908, is the reliable and cost-effective solution to restore your vehicle’s peak performance and reliability.
Is Your Vehicle Showing These Symptoms?
- ✔ Persistent Check Engine Light (CEL) that won’t go away.
- ✔ Unexplained drop in fuel economy.
- ✔ Engine stalling, stumbling, or hesitating during acceleration.
- ✔ Rough or erratic idling.
- ✔ Misfire codes (e.g., P0300) even after replacing plugs and coils.
- ✔ Complete no-start condition where the engine cranks but won’t fire.
- ✔ Communication errors with diagnostic scan tools.
Why Choose Our Pre-Programmed GM ECM 12669908?
Replacing an ECM isn’t just about swapping the part; it requires specific programming to your vehicle’s unique Vehicle Identification Number (VIN). Our service eliminates the most difficult step. We take a thoroughly tested, genuine used GM module and program it with the latest official GM software calibrations for your exact vehicle. This means you get a part that is ready for installation, saving you the time, expense, and hassle of a trip to the dealership for programming.
From the Diagnostic Bay
We had a 2018 Chevy Equinox come in with a P0606 code (ECM Processor Fault). The owner had already replaced the spark plugs and an oxygen sensor trying to fix a rough idle. After confirming power and ground to the module were good, we knew the ECM was the culprit. Swapping in a pre-programmed unit like this one had the vehicle running smoothly in under an hour, saving the customer from a costly diagnostic rabbit hole and a tow to the dealership.
Simple Process, Professional Results
- ✔ Confirm Your Part Number: Verify that your current ECM has the service number 12669908 printed on the label.
- ✔ Place Your Order: Add this item to your cart and complete your purchase.
- ✔ Provide Your VIN: After ordering, simply send us your 17-digit VIN. We cannot ship the module until we have this information.
Important Installation Information
While this module is programmed to your VIN, modern GM vehicles have a sophisticated anti-theft system. Upon installation, you or your mechanic will need to perform a Vehicle Theft Deterrent System (VTDS) relearn. This procedure syncs the new ECM with your vehicle’s security system and is required for the engine to start. This is typically done with a professional scan tool or through GM’s TIS2Web service.
Additionally, other vehicle-specific procedures, such as a crankshaft variation relearn or injector flow rate programming, may be necessary depending on your exact model. These are standard procedures after an ECM replacement and are the responsibility of the installer.
Frequently Asked Questions
How does the programming process work?
After you purchase, you provide us with your vehicle’s 17-digit VIN. Our technicians use professional GM-approved equipment to load the correct factory software and calibrations for your specific vehicle onto this ECM before we ship it.
Do I need to send my old ECM to you?
No, there is no core charge or need to send us your old part. The process is based entirely on the VIN you provide.
What is a “theft relearn” and why is it necessary?
The theft relearn (or VTDS relearn) is a security procedure that syncs the new ECM to your vehicle’s ignition key and body control module. Without this step, the vehicle’s security system will prevent the engine from starting, as it will think the ECM has been stolen. This is a mandatory step for this part.
Will this GM ECM 12669908 fix my car’s problem for sure?
This part will resolve any issues directly caused by a faulty ECM. However, it’s crucial that your vehicle has been properly diagnosed. This module will not fix problems related to other failed components like sensors, wiring, or mechanical parts.
Is this a new part?
No, this is a genuine, used OEM part sourced from a salvaged vehicle. Each unit is inspected and tested to ensure it is fully functional before being programmed and shipped.