Get Your Vehicle Back on the Road, Fast.
Is your truck, van, or SUV suffering from frustrating and costly issues like a no-start condition, erratic idling, or a check engine light that won’t go away? A failing Engine Control Module (ECM) is often the culprit, leaving your vehicle unreliable and out of commission. This genuine GM Engine Control Module is the definitive solution to restore your vehicle’s performance and dependability. We take the guesswork and hassle out of the repair by professionally programming this unit to your vehicle’s specific VIN before it ships. It arrives ready for a straightforward installation, getting you or your customer back on the road without a costly trip to the dealership.
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 exact problems:
- Complete no-start or intermittent starting issues
- Poor engine performance, hesitation, or stalling
- Reduced fuel economy
- Communication error codes (U-codes)
- Check Engine Light with various diagnostic trouble codes (DTCs)
- Transmission shifting problems or other electronic module failures
By replacing your old unit with this professionally programmed 12629009 ECM, you are installing a reliable, updated component that restores the critical link between your vehicle’s engine and its electronics.
Features & Benefits
- โ VIN-Specific Programming Included: We flash the module with the latest GM software updates using your vehicle’s VIN. This ensures perfect compatibility and function right out of the box.
- โ No Dealer Visit Required: Because the programming is done beforehand, you can skip the expensive and time-consuming process of having a dealership program a new module.
- โ Restores Original Performance: Corrects running issues, improves fuel efficiency, and ensures all engine parameters are operating to factory specifications.
- โ Direct-Fit Replacement: This is an authentic component designed to match part numbers 12629009 and 12625455, guaranteeing a perfect fit and connection in your GM vehicle.
- โ Confidence in Your Repair: This unit is backed by our one-year replacement warranty.
Expert Insight: The Critical Role of Correct Programming
As a technician with over two decades of experience, I’ve seen countless issues caused by improperly matched control modules. Simply installing a used ECM from another vehicle won’t workโit contains the wrong VIN, security information, and operating parameters. Our VIN-flashing service isn’t just a convenience; it’s essential for a successful repair. We ensure the security keys match (for anti-theft systems) and that the module has the correct software for your specific engine, transmission, and options package. This attention to detail prevents a host of new problems and guarantees the programmed 12629009 ECM functions as the original did from the factory.
Frequently Asked Questions
Do I need to do any additional programming after installation?
No. We program the ECM to your vehicle’s VIN before shipping. In most cases, it is a plug-and-play installation. Some vehicles may require a simple security relearn procedure, which can be done without special tools and typically takes 10-15 minutes. Instructions can be provided upon request.
How do I provide my VIN?
After you complete your purchase, you will need to send us a message with your 17-digit Vehicle Identification Number (VIN). We cannot ship your part until we receive this information, as it is required for programming.
Is this a direct replacement for my original ECM?
Yes, this module is a direct replacement for original parts with service numbers 12629009 or 12625455. Please check the extensive compatibility list on this page to confirm it fits your specific make, model, and year.
Will this fix my specific check engine light codes?
This programmed 12629009 ECM is the solution for codes directly related to a faulty processor or internal module failure. It is crucial to properly diagnose your vehicle to ensure the ECM is the root cause of the issue and not a separate sensor or wiring problem.
Where is the ECM located on my vehicle?
Location varies by model. On many GM trucks and SUVs (like Silverado, Sierra, Tahoe), it’s in the LH front of the engine compartment. On Savana and Express vans, it is often located in the LH rear of the engine compartment. Always consult a service manual for your specific vehicle for the exact location.