Get Your Truck Back on the Road, Fast.
Is your 2004 GM truck or SUV running rough, shifting erratically, or refusing to start? A failing Powertrain Control Module (PCM) is often the culprit, leaving you stranded and frustrated. This isn’t just an inconvenience; it’s a critical failure that compromises your vehicle’s performance and reliability. This direct-replacement PCM is the definitive solution to get your vehicle running like new again. We pre-program it to your vehicle’s specific VIN using the latest GM software updates, so it arrives at your door ready for a straightforward installation.
Common Symptoms & Your Solution
If you’re experiencing any of the following issues, a faulty engine computer is the likely cause. This module is designed to fix them permanently:
- Harsh or unpredictable transmission shifting
- Engine stalling, misfiring, or poor idling
- Complete no-start condition
- Check Engine Light (CEL) with communication-related trouble codes (e.g., U-codes)
- Reduced fuel economy
- Erratic behavior from gauges or other electronics
Don’t let a bad computer sideline your workhorse. Installing this professionally programmed 2004 Silverado 2500 PCM 12586242 will restore communication between your vehicle’s critical systems, bringing back the smooth, reliable performance you depend on.
Features & Benefits
- ✔ VIN-Programmed for Your Vehicle: No need for an expensive trip to the dealer. We flash the unit with your specific VIN and the latest GM software before it ships, making it a true plug-and-play solution.
- ✔ Restores Original Performance: Eliminates drivability issues caused by a failing module, restoring lost power, improving fuel efficiency, and ensuring proper transmission function.
- ✔ Guaranteed Compatibility: This unit is a direct replacement for service numbers 12586242, 19299226, 89017738, and many others, ensuring a perfect fit and function for a wide range of 2004 GM trucks and SUVs.
- ✔ Built to Last: Engineered to meet or exceed original equipment specifications for durability and long-term reliability in demanding conditions.
- ✔ Purchase with Confidence: This unit is backed by our one-year replacement warranty.
Expert Insight: The Critical Role of VIN Programming
As a technician, I’ve seen countless vehicle owners buy a used computer from a salvage yard, only to find it doesn’t work. That’s because a PCM is not a one-size-fits-all part. It’s programmed with a specific vehicle’s VIN, which contains information about its engine, transmission, emissions equipment, and even security system (Passlock/VATS). Our process of programming this 2004 Silverado 2500 PCM 12586242 to your VIN before shipping is what makes it a reliable fix. It ensures all systems communicate correctly, avoids security lockouts, and gives you the performance GM intended—something a generic or improperly matched module can never do.
Take the guesswork out of your repair. By providing us with your VIN at checkout, you ensure you receive a component that is perfectly matched to your vehicle’s exact specifications. This is the most reliable and efficient way to solve complex electronic issues and get your truck back to work. If you’re looking for a dependable replacement for your 2004 Silverado 2500 PCM 12586242, your search is over.
Frequently Asked Questions
Do I need to program this computer?
No. This PCM comes fully programmed to your vehicle’s VIN. It is ready to be installed upon arrival. In some cases, a CASE relearn or security relearn procedure may be required after installation, which can be done with a capable scan tool or by following a simple manual procedure.
What information do you need from me?
After you place your order, you must provide us with your vehicle’s 17-digit Vehicle Identification Number (VIN). This is essential for us to program the module correctly for your specific vehicle configuration.
Is this a “plug and play” part?
Yes, for the vast majority of vehicles, this is a plug-and-play installation. Once you install the module and connect the battery, your vehicle should start and run correctly. Please refer to the included instructions for any specific relearn procedures that may be necessary.
How do I find my part/service number?
Your original PCM will have a sticker on it with the service number. This unit is a direct replacement for several service numbers, including 12586242, 19299226, 89017738, YFKD, YFKF, and many others listed in the fitment data.
Will this fix my check engine light?
If the check engine light is on due to a fault within the original PCM, this replacement unit will resolve the issue. It’s crucial to ensure the problem has been properly diagnosed and that the PCM is indeed the point of failure.