Restore Your Vehicle’s Brain and Get Back on the Road with Confidence
Is your truck, SUV, or car suffering from baffling electrical issues, poor performance, or a dreaded no-start condition? A failing Engine Control Module (ECM) is often the culprit, acting like a broken brain for your vehicle. This genuine GM Engine Control Module, compatible with part numbers 12625455 and 12629009, is the definitive solution. We take the guesswork and expensive dealer visits out of the equation. Before we ship, our experts program the module with the latest GM software, perfectly matched to your vehicle’s specific VIN. The result is a true plug-and-play component that restores your vehicle’s performance, reliability, and drivability right out of the box.
Common Symptoms & Your Solution
If you’re experiencing any of the following, a failing ECM is the likely cause. This pre-programmed module is designed to be the direct-fit, reliable fix for:
- Check Engine Light (CEL) with communication-related Diagnostic Trouble Codes (DTCs) like U0100.
- Unexplained engine stalling or shutting off while driving.
- Complete no-start condition where the engine cranks but won’t fire.
- Erratic or harsh transmission shifting.
- Poor fuel economy and noticeable loss of engine power.
- Communication issues with diagnostic scan tools.
Features & Benefits
- โ VIN-Programmed for Your Vehicle: We flash the module with your car’s unique VIN and the latest GM software updates. This eliminates the need for expensive dealer tools or programming services.
- โ True Plug-and-Play Installation: Once you receive the part, simply disconnect the old module and install this one. In most cases, no complicated relearn procedures are required.
- โ Restored Factory Performance: With fresh, updated software, your engine and transmission will operate precisely as the manufacturer intended, restoring lost power and efficiency.
- โ Direct OEM Replacement: This isn’t a generic part. It’s designed to meet or exceed original equipment specifications for a perfect fit and flawless communication with your vehicle’s other modules.
- โ Peace of Mind Included: This unit is backed by our one-year replacement warranty.
Expert Insight: The Power of Proper Programming
As a technician, I’ve seen countless vehicle owners buy used or blank modules online, thinking they’ve saved money. They then face the massive headache of getting it programmed. Dealers can be reluctant to program customer-supplied parts, and independent shops may lack the specific tools. Our process solves this critical step for you. By programming the programmed 12625455 ECM *before* it leaves our facility, we ensure it communicates seamlessly with your vehicle’s security system, transmission controller, and other electronics from the moment you plug it in. This prevents a world of frustration and gets your vehicle back to workโor back to the familyโwithout delay.
Frequently Asked Questions
Do I need to do any programming or flashing myself?
Absolutely not. The main benefit of our service is that we handle all the programming for you. This programmed 12625455 ECM will arrive at your door ready for installation, flashed with the latest GM software for your specific VIN.
How do I provide you with my VIN?
After you complete your purchase, simply add your 17-digit Vehicle Identification Number (VIN) to the ‘notes’ section of your order. If you forget, we will contact you before shipping to ensure we get the correct information.
Will this part require a security or key relearn procedure?
In the vast majority of GM vehicles this part fits, a separate security relearn is not necessary as the programming to your VIN handles the security handshake. The vehicle should start and run immediately after installation.
Is this the correct part for my vehicle?
This module replaces OEM part numbers 12625455 and 12629009. Please check the detailed fitment list on this page to confirm compatibility with your specific year, make, model, and engine option. Matching the part number is the best way to guarantee a perfect fit.
What kind of problems does a bad ECM cause?
A failing ECM can cause a wide range of issues, from a simple check engine light to stalling, poor shifting, a complete no-start, and communication failures between the vehicle’s electronic systems.
What is the warranty on this part?
This unit is backed by our one-year replacement warranty, giving you confidence in your repair.