Get Your Vehicle Back in Command
Is your truck, van, or SUV suffering from frustrating issues like a persistent check engine light, rough idling, stalling, or a complete no-start condition? A failing Engine Control Module (ECM) is often the culprit, acting like a broken brain for your vehicle’s most critical systems. This direct-fit Programmed 12625455 ECM is the definitive solution to restore your vehicle’s performance, reliability, and drivability. We take the guesswork and hassle out of the repair by pre-programming the module to your vehicle’s unique VIN before it ever leaves our facility. This means a simpler installation process for you, getting you back on the road faster and with confidence.
Common Symptoms & Your Solution
If you’re experiencing any of the following, a faulty ECM is the likely cause. This module is designed to fix them all:
- Check Engine Light (CEL) is on with communication codes (e.g., U0100)
- Engine cranks but refuses to start
- Poor fuel economy and engine performance
- Random or intermittent stalling
- Harsh or incorrect automatic transmission shifting
- Apparent loss of spark or fuel injector pulse
Features & Real-World Benefits
- ✔ VIN-Programmed for Your Vehicle: We flash the unit with your specific VIN and the latest GM software updates. This eliminates the need for an expensive trip to the dealership for programming.
- ✔ Simple, Direct Installation: Because it’s programmed, installation is straightforward. In most cases, you will only need to perform a simple security relearn procedure, which can be done without special tools.
- ✔ Restored Factory Performance: By correcting engine management failures, this module restores the crisp response, smooth idle, and fuel efficiency you expect from your vehicle.
- ✔ Guaranteed Compatibility: This unit is a direct replacement for part numbers 12625455 and 12629009, ensuring a perfect fit and function for the extensive list of compatible GM models.
- ✔ Purchase with Confidence: This unit is backed by our one-year replacement warranty.
Expert Insight: More Than Just a Part
Replacing an ECM isn’t like swapping out an air filter. This is the central command center of your vehicle. Many persistent drivability issues on these GM vehicles are caused by outdated factory software. Simply installing another used module without the latest updates often means you’re just installing the same old problems. Our process ensures every Programmed 12625455 ECM ships with the newest software available from GM, correcting known bugs and optimizing performance beyond what the original unit could offer.
Frequently Asked Questions
Is this module difficult to install?
Because this Programmed 12625455 ECM is delivered flashed to your VIN, the physical installation is very simple. It’s a direct plug-in replacement. After installation, you will likely need to perform a security relearn procedure (also known as a Passlock or anti-theft relearn), which typically takes 10-30 minutes and does not require any special scan tools. We can provide instructions for this simple process.
How do I provide my VIN?
After you complete your purchase, you will need to send us your 17-digit Vehicle Identification Number (VIN). You can typically reply to your order confirmation email or use the website’s contact form. We cannot ship your part until we receive the VIN, as the programming is specific to your exact vehicle.
How can I be certain this fits my vehicle?
Please check the extensive fitment list on this page. The most reliable method is to match the part number on your existing ECM to 12625455 or 12629009. If you are still unsure, please contact us with your VIN and we will be happy to verify compatibility for you.
What if I have an issue after installation?
First, ensure the security relearn procedure was completed correctly, as this is the most common cause of post-installation issues. If problems persist, please contact our support team. This unit is backed by our one-year replacement warranty, and we are here to help you get your vehicle running right.
Do I need to send my old computer back?
No core charge is required for this part. You do not need to return your old, failed ECM to us.