Get Your Hard-Working Truck Back in Top Form
Is your Silverado 3500 running rough, refusing to start, or throwing confusing check engine lights? A faulty Powertrain Control Module (PCM) can bring your workhorse to a grinding halt, costing you time, money, and peace of mind. This replacement PCM, service number 12586242, is the definitive solution to restore your truck’s reliability and performance. It arrives at your door fully programmed to your vehicle’s specific VIN with the latest factory software updates from GM, eliminating the need for an expensive trip to the dealership.
Common Symptoms & Your Solution
If you’re experiencing any of the following issues, a failing engine computer is the likely culprit. This pre-programmed module is designed to resolve them:
- Harsh or erratic automatic transmission shifting
- Engine stalling, stumbling, or misfiring
- Complete no-start condition where the engine cranks but won’t fire
- Poor fuel economy and loss of power
- Check Engine Light with communication-related DTCs (e.g., P0601, P0606)
- Intermittent electrical or sensor-related problems
Installing this professionally programmed 2004 Silverado 3500 PCM 12586242 is the most effective way to address these root problems and get your truck operating as it should.
Features & Benefits
- โ Plug & Play Installation: Arrives pre-flashed to your truck’s VIN. No extra programming required.
- โ Latest GM Software: Programmed with the newest updates to optimize engine efficiency, transmission performance, and fuel economy.
- โ Cost-Effective Repair: Avoids the high labor costs and programming fees associated with a dealership visit.
- โ Guaranteed Compatibility: A direct replacement for service numbers 12586242, 19299226, 89017738, and many more.
- โ Restored Reliability: Solve frustrating intermittent issues and trust your truck to perform day in and day out.
- โ Peace of Mind: This unit is backed by our one-year replacement warranty.
Expert Insight: The Power of Proper Programming
From my 20+ years in diagnostics, I can tell you that not all replacement computers are created equal. A used module from a salvage yard might have the same part number, but it’s programmed for a different vehicle’s options and security system. This unit isn’t just a part; it’s a complete solution. We flash it with the latest GM-certified calibration file specific to your VIN. This ensures all components, from the transmission to the fuel injectors, operate precisely as the engineers intended, often fixing underlying drivability issues you may have thought were unrelated.
Don’t let a faulty computer keep your truck sidelined. This is your opportunity to install a reliable, correctly configured brain for your vehicle. By providing your VIN upon purchase, you ensure that the 2004 Silverado 3500 PCM 12586242 you receive is perfectly matched to your truck’s specific build, making the installation process as simple as possible.
Frequently Asked Questions
Do I need to program this computer?
No. This computer comes fully programmed to your vehicle’s VIN before we ship it. It is ready for installation right out of the box. You will, however, need to perform a security relearn procedure after installation, which is a simple process that can be done without any special tools.
What information do you need from me?
After you complete your purchase, you must provide us with your vehicle’s 17-digit Vehicle Identification Number (VIN). This is critical for us to program the module correctly for your specific truck and its options.
Where is the PCM located on my 2004 Silverado 3500?
On most 2004 GM full-size trucks and SUVs, including the Silverado, the PCM is located in the engine bay on the driver’s side, under the battery tray or near the airbox.
Will this fix my specific check engine light codes?
This PCM is a common solution for internal module failure codes like P0601 (Internal Control Module Memory Check Sum Error) and other communication-related faults. While it can resolve many issues, proper vehicle diagnosis is always recommended to confirm the PCM is the point of failure.
Is this a brand new part?
This is a high-quality, tested replacement part that has been programmed with the latest software. It is guaranteed to function to factory specifications and is a reliable alternative to a costly new unit from a dealer.