Is Your GM Truck or SUV Acting Up? Get Back on the Road with Confidence.
If you’re dealing with frustrating and unpredictable engine problems like a persistent check engine light, rough idling, stalling, or even a vehicle that won’t start, a failing Engine Control Module (ECM) is likely the culprit. Don’t let a faulty computer keep your reliable truck or SUV sidelined. This is the straightforward, dependable solution to restore your vehicle’s brain and get it running like it should. This unit is a direct-fit, Programmed 12586242 ECM, specifically flashed for your vehicle’s unique VIN.
Common Symptoms of a Failing ECM & Your Direct Solution
A faulty ECM can cause a wide range of issues that can be difficult to diagnose. If you’re experiencing any of the following, this pre-programmed module is your definitive fix:
- Erratic engine performance, including stalling or hesitation
- Poor fuel economy and loss of power
- Persistent Check Engine Light (CEL) with codes like P0601, P0602, or P0606
- Communication errors with diagnostic scan tools
- Intermittent or complete no-start conditions
- Harsh or incorrect automatic transmission shifting
Instead of paying for expensive diagnostics and programming fees at a dealership, this unit arrives ready for installation. We take your vehicle’s VIN, program the module with the latest official GM software, and ship it directly to you. It’s the most efficient way to solve the problem correctly the first time.
Features & Benefits
- ✔ VIN-Specific Programming Included: We program the module to your exact VIN before shipping. This ensures perfect compatibility with your vehicle’s engine, transmission, and factory options.
- ✔ Optimized Performance & Efficiency: Your ECM will be loaded with the newest GM software updates, ensuring your engine runs at peak performance with optimal fuel economy and emissions.
- ✔ Simplified Installation: This is a true plug-and-play solution. Once installed, you will only need to perform a simple security relearn procedure, which does not require a special scan tool.
- ✔ Guaranteed Compatibility: This ECM is the correct replacement for a wide range of service numbers, including 12586242, 19299226, 89017738, YFKD, YFKF, YFKH, YFKJ, YFKX, YFXL, YFXM, YFXN, YFXP, and YHTN.
- ✔ One-Year Replacement Protection: Drive with confidence knowing this unit is backed by our one-year replacement warranty.
An Expert’s Note on VIN Programming
As a technician with over two decades of experience, I can’t stress this enough: VIN programming is not optional. It’s the critical step that tells the computer it belongs in your vehicle. A generic, unprogrammed module from a junkyard or a big-box store will cause a cascade of new problems, from transmission failures to security system lockouts. Our process ensures the ECM is a perfect digital match, just like the original one from the factory, giving you a seamless and lasting repair.
This Programmed 12586242 ECM is the professional-grade solution for a wide variety of 2004 GM vehicles, including the Silverado, Sierra, Suburban, Tahoe, Yukon, Escalade, Hummer H2, SSR, and more. Please verify your service number against our compatibility list to ensure a perfect match.
Frequently Asked Questions
How do I provide you with my vehicle’s VIN?
After you complete your purchase, simply send us a message with your 17-digit Vehicle Identification Number (VIN). We cannot program and ship your ECM without it.
Is this part difficult to install?
The physical installation is straightforward for anyone with basic mechanical skills. It typically involves disconnecting the battery, unplugging the electrical connectors, and unbolting the old module. After installing the new one, you will need to perform a security relearn procedure, which can usually be done with just the ignition key and takes about 30 minutes. Instructions are widely available online for this process.
Do I need to send my old computer (core) back?
No, a core return is not required for this purchase. You can keep or dispose of your old module.
Will this fix my check engine light?
If the check engine light and performance issues are being caused by a faulty ECM, this part will resolve them. However, we always recommend a proper diagnosis to confirm the ECM is the point of failure before purchasing. This Programmed 12586242 ECM is the solution for a failed computer, not other mechanical or electrical issues.
My original part has a different service number on it. Will this work?
Yes, as long as your original service number is included in the list in our description (e.g., YFKH, YFXL, 19299226, etc.), this unit is the correct hardware replacement. The VIN-specific programming is what makes it fully compatible with your vehicle’s systems.