Is your 2004 GM truck or SUV running rough, shifting erratically, or showing a persistent check engine light? A failing Engine Control Module (ECM) is often the culprit, leaving you stranded and frustrated. This pre-programmed ECM is your direct-fit, reliable solution to get your vehicle back on the road with confidence. We professionally flash this computer with the latest official GM software updates using your vehicle’s specific VIN, ensuring it works correctly right out of the box.
Common Symptoms of a Failing GM ECM & Your Solution
If you’re experiencing issues like poor fuel economy, random engine misfires, hard starting, erratic transmission shifting, or a complete no-start condition, the brain of your vehicle may be failing. Diagnostic Trouble Codes (DTCs) such as P0601 (Internal Control Module Memory Check Sum Error) or P0606 (ECM/PCM Processor Fault) are clear indicators. This module is the definitive fix, engineered to restore communication and proper function to all related systems, turning off that check engine light and restoring smooth operation.
- ✔ VIN-Programmed for Your Vehicle: We flash the module with your specific VIN before shipping. This eliminates the need for expensive dealership programming, making for a simple, plug-and-play installation.
- ✔ Restored Engine Performance: A correctly functioning ECM is critical for managing fuel delivery, ignition timing, and transmission shifting. This unit will restore your vehicle’s original power, efficiency, and smooth operation.
- ✔ Updated GM Software: Your module arrives with the newest stable software updates from General Motors, addressing common factory bugs and improving overall vehicle performance and reliability.
- ✔ Broad Compatibility: This ECM is a direct replacement for service numbers 12586242, 19299226, 89017738, and many more, ensuring a perfect fit for a wide range of 2004 GM trucks and SUVs. This is your solution for a faulty 2004 GM Truck SUV ECM.
- ✔ Quality Inspected: Each module is meticulously inspected to ensure it meets our high standards for performance and durability, giving you a dependable part you can count on.
- ✔ One-Year Replacement Coverage: This unit is backed by our one-year replacement warranty. Drive with the confidence that you’re protected.
A Technician’s Tip: The ‘CASE’ Relearn
After installing your new 2004 GM Truck SUV ECM, a ‘CASE’ (Crankshaft Angle Sensor Error) relearn procedure is often required to prevent a P1336 trouble code and ensure accurate misfire detection. While some vehicles learn this on their own after a few drive cycles, a professional scan tool can perform the procedure in minutes. This simple step ensures your engine runs as smoothly and efficiently as the engineers designed it to.
Frequently Asked Questions
Do I need to send my old computer in?
No, there is no core charge or need to return your old module. This is an outright purchase.
Is this ECM really “plug and play”?
Yes. Because we program it to your vehicle’s VIN before shipping, it is ready to be installed without any additional dealer programming. In some cases, a security relearn or CASE relearn procedure may be necessary, which can be done without a trip to the dealer. We include instructions for these simple procedures.
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 it. You can typically find your VIN on your vehicle’s dashboard (visible through the windshield) or on your insurance/registration documents.
What if my part number isn’t an exact match to 12586242?
This module replaces a wide range of service numbers, including 19299226, 89017738, YFKD, YFKF, YFKH, and many others listed in the description. As long as your vehicle is on the compatibility list, this VIN-programmed unit is the correct replacement.
Will this fix my specific problem?
This 2004 GM Truck SUV ECM is a common solution for a variety of engine performance and electrical issues. While it is a very likely fix for symptoms like misfires, no-start conditions, and communication codes, we always recommend a proper diagnosis by a qualified technician to confirm the ECM is the point of failure.
What is the warranty on this part?
This unit is backed by our one-year replacement warranty.