Restore Your Vehicle’s Performance and Reliability
Is your GM truck, SUV, or car suffering from baffling electrical issues, a persistent check engine light, or poor engine performance? A failing Engine Control Module (ECM) is often the culprit, acting as a faulty brain for your vehicle’s most critical functions. This genuine GM Engine Control Module, part number 12625455, is the definitive solution. It arrives at your door fully programmed to your vehicle’s specific Vehicle Identification Number (VIN), eliminating the need for expensive dealership programming and getting you back on the road with confidence.
Common Symptoms & Your Solution
If you’re experiencing any of the following, a faulty ECM is the likely cause. This pre-programmed module is designed to resolve these issues directly:
- Check Engine Light with communication-related codes (e.g., P0601, P0606)
- Engine stalling, sputtering, or misfiring
- Harsh or erratic automatic transmission shifting
- Complete no-start condition where the engine cranks but won’t fire
- Reduced fuel economy and poor overall performance
By installing our programmed 12625455 ECM, you are not just replacing a part; you are restoring your vehicle’s factory-specified operational integrity with the latest software updates from GM.
Features & Tangible Benefits
- ✔ VIN-Specific Programming Included: Your ECM arrives ready for installation. No extra trips to the dealer for expensive programming—we handle it all before shipping.
- ✔ Loaded with Latest GM Software: We flash the unit with the most current GM updates, ensuring optimal engine performance, fuel efficiency, and emissions control.
- ✔ Direct-Fit OEM Replacement: This module is a direct replacement for part numbers 12625455 and 12629009, guaranteeing perfect fitment and function.
- ✔ Restores Peak Drivability: Solves common issues like rough idling, poor acceleration, and inconsistent shifting, making your vehicle drive like it just left the showroom.
- ✔ Peace of Mind Guarantee: This unit is backed by our one-year replacement warranty.
An Expert’s Note on Programming: An ECM is more than just hardware; it’s the central command center tailored specifically to your vehicle’s engine, transmission, and options package. Simply installing a used, non-programmed module from another vehicle will result in a no-start condition due to the factory anti-theft system (Passlock/VATS). Our VIN-matching service ensures the ECM communicates seamlessly with your vehicle’s other modules, providing a true plug-and-play repair that saves you hundreds in diagnostic and programming fees.
Frequently Asked Questions
What do I need to do after I place my order?
After your purchase is complete, you must provide us with your vehicle’s 17-digit VIN. We cannot program and ship your programmed 12625455 ECM without it. You can typically add this as a note during checkout or send it to us in a message referencing your order number.
Is this part difficult to install?
For most vehicles listed, the ECM is in an accessible location in the engine bay. The physical replacement is straightforward, typically involving disconnecting the battery, unplugging a few electrical connectors, and unbolting the module. Since the programming is done, it is a plug-and-play installation. However, a security relearn procedure may be required, which is a simple process you can do yourself in about 10-15 minutes. Instructions can be readily found online for your specific model.
How can I be sure this fits my vehicle?
This module fits a wide range of 2009-2010 GM vehicles. Please review the detailed compatibility list on this page carefully. Matching your vehicle’s year, make, model, and engine size is crucial. If you are unsure, contact us with your VIN, and we will be happy to verify compatibility for you.
Will this fix my check engine light?
If the check engine light and performance issues are caused by a failed internal processor or corrupted software in your original ECM (often indicated by codes like P0601), then this part is the correct fix. It is always recommended to have a proper diagnosis performed to rule out other potential issues, such as faulty sensors or wiring.
What if my original part number is 12629009?
This ECM, part number 12625455, is a fully compatible and interchangeable replacement for part number 12629009. It will function identically once programmed to your vehicle’s VIN.