Restore Your Vehicle’s Brain, Not Just a Part
A failing Engine Control Module (ECM) can bring your vehicle to a standstill, causing frustrating issues like a persistent check engine light, poor performance, random stalling, or even a complete no-start condition. Don’t let a faulty computer keep you off the road. This genuine OEM Engine Control Module is the definitive solution, arriving at your door fully programmed to your vehicle’s specific VIN. This isn’t just a replacement part; it’s a complete, ready-to-install remedy that restores the heart of your vehicle’s operating system.
Common Symptoms & Your Direct-Fit Solution
If you’re experiencing any of the following, a failing ECM is the likely culprit. This professionally programmed 12629009 ECM is designed to resolve these exact problems:
- Erratic engine performance, stumbling, or misfiring
- Poor fuel economy and loss of power
- Harsh or incorrect automatic transmission shifting
- Check Engine Light with internal processor codes (e.g., P0601, P0606)
- Intermittent or complete no-start condition
- Communication issues with diagnostic scan tools
Features & Tangible Benefits
- โ Plug & Drive Installation: We flash this ECM with the latest GM software using your vehicle’s VIN. This critical step ensures perfect compatibility and saves you a costly trip to the dealership for programming.
- โ Restores Peak Performance: By correcting faulty logic and processing, this module restores crisp engine response, smooth shifting, and optimal fuel efficiency.
- โ OEM Reliability: This is a genuine OEM unit, ensuring the same performance, durability, and precise calculations as the original part that came with your vehicle.
- โ Guaranteed Compatibility: A direct replacement for part numbers 12629009 and 12625455, this module covers a wide range of GM cars, trucks, and SUVs, ensuring a perfect fit.
- โ Purchase with Confidence: This unit is backed by our one-year replacement warranty.
An Expert’s Note on Programming: As a technician with over 20 years on the floor, I’ve seen countless headaches caused by unprogrammed modules. Modern vehicles have complex security systems (like GM’s VATS/Passlock) and dozens of specific calibrations for the engine, transmission, and even tire size. Simply swapping a computer from another vehicle won’t workโit will either fail to start or run poorly. Our VIN-specific programming service for this Programmed 12629009 ECM handles all of that for you, ensuring the module communicates perfectly with your vehicle from the moment you connect it.
Frequently Asked Questions
How do I provide my vehicle’s VIN?
After you complete your purchase, you can add your 17-digit VIN to the order notes or send it to us in a message. We cannot program or ship the module without it, so please provide it promptly to avoid delays.
Is any additional programming or setup required after installation?
No. This ECM arrives fully programmed and ready for installation. In some cases, a Case Relearn or security relearn procedure may be needed, which can be done with a capable scan tool or by following a simple key-cycle procedure. However, the core programming is 100% complete.
What if my original part number is 12625455?
This module, part number 12629009, is the correct and updated replacement for 12625455. As long as your vehicle is on the compatibility list, this unit will function perfectly.
Will this fix my specific check engine light codes?
This module is the direct solution for codes related to internal processor failure, such as P0601 through P0606. While it can resolve other issues, it’s crucial to first diagnose that the fault is not with a sensor, wiring, or another component.
Is this a difficult part to install myself?
For most vehicles on the fitment list, the ECM is easily accessible in the engine bay. Installation typically requires only basic hand tools to disconnect the battery, unplug the electrical connectors, and unbolt the module. It is a very DIY-friendly repair.