Restore Your Vehicle’s Performance and Reliability
Is your vehicle suffering from confusing electrical issues, poor performance, or a frustrating no-start condition? A failing Engine Control Module (ECM) is often the hidden culprit, leaving you stranded and stressed. This professionally programmed engine computer is the direct-fit solution to restore your vehicle’s core functions and your peace of mind. We take the guesswork out of the repair by flashing the module with the latest GM software updates specifically for your vehicle’s VIN, making this a straightforward, effective fix.
Common Symptoms of a Failing ECM & Your Solution
If you’re experiencing any of the following, a faulty engine computer may be to blame. This unit is designed to be the definitive solution for these complex issues:
- Unexplained Check Engine Light (CEL) illumination
- Engine stalling, sputtering, or misfiring
- Noticeable decrease in fuel economy
- Harsh or erratic automatic transmission shifting
- Intermittent starting problems or complete no-start condition
- Loss of communication with diagnostic scan tools
- Error codes related to internal module failure (e.g., P0601, P0606)
Installing our programmed 12629009 ECM resolves these issues by re-establishing precise, stable control over your vehicle’s critical systems.
Features & Benefits
- ✔ VIN-Programmed for Your Vehicle: No expensive trip to the dealership is required. We flash the module with the latest GM software using your vehicle’s VIN, ensuring it’s ready for installation right out of the box.
- ✔ Direct-Fit OEM-Quality Replacement: Guarantees compatibility and seamless integration with your vehicle’s systems, matching part numbers 12629009 and 12625455 for a perfect fit.
- ✔ Restores Peak Performance: Corrects issues like rough idling, poor fuel economy, and erratic behavior by restoring the brain of your vehicle’s powertrain.
- ✔ Plug & Play Installation: Once programmed to your VIN, this module is designed for a simple installation process. In many cases, a standard security relearn procedure is all that’s needed to get you back on the road.
- ✔ This unit is backed by our one-year replacement warranty.
An Expert Technician’s Insight
As a technician with over two decades of experience, I’ve seen countless drivers chase expensive sensor and wiring repairs when the root cause was the ECM itself. A common misdiagnosis is a faulty transmission or fuel pump. This programmed 12629009 ECM often resolves a host of seemingly unrelated issues at once, saving you hundreds in diagnostic fees and unnecessary parts. The key is the VIN-specific programming—it ensures all the unique parameters for your vehicle’s options are correctly loaded, making the installation process smooth and effective.
Frequently Asked Questions
Do I need to do anything after installation?
In most GM vehicles, you will need to perform a security relearn procedure (often called a CASE relearn or anti-theft relearn). This process syncs the new ECM to your vehicle’s keys and security system. It is a simple procedure that typically takes 10-30 minutes and does not require special tools.
How do I provide my VIN?
After you complete your purchase, you will need to send us your 17-digit Vehicle Identification Number (VIN). We cannot ship your part until we receive this information, as the programming is essential for the part to function in your vehicle.
Is this really a plug-and-play part?
Because we program the module to your VIN before shipping, it eliminates the need for expensive dealer-level programming tools. Once you perform the security relearn, it is ready to go. This makes it as close to ‘plug-and-play’ as an engine computer can be.
What happens if I don’t provide my VIN?
The module will not work correctly. The VIN programming loads all the specific software for your vehicle’s engine, transmission, and options. Without it, your vehicle may not start or run properly. We will hold your order until the VIN is provided.
How can I be sure this fits my vehicle?
Please use the detailed fitment list on this page to confirm compatibility with your vehicle’s year, make, model, and engine size. Matching your original part number to 12629009 or 12625455 is the best way to ensure a perfect match.