Restore Your Truck’s Performance and Reliability
Is your 2004 GM truck or SUV suffering from frustrating issues like a persistent check engine light, erratic shifting, or a no-start condition? A failing Powertrain Control Module (PCM) is often the culprit, disrupting the critical communication between your engine and transmission. This replacement PCM, service number 12586242, is the definitive solution to get your vehicle back on the road, running smoothly and dependably. We take the guesswork out of the repair by programming the module to your vehicle’s specific VIN before it ships, ensuring a straightforward installation process.
Common Symptoms & Your Solution
If you’re experiencing any of the following, it’s a strong indicator that your engine computer has failed. This pre-programmed module is designed to fix these problems:
- Check Engine Light (CEL) with communication-related trouble codes (e.g., P0601, P0606)
- Harsh or unpredictable automatic transmission shifting
- Engine stalling, stumbling, or misfiring
- Poor fuel economy
- Complete no-start or intermittent starting issues
- Failure to communicate with diagnostic scan tools
By installing this correctly programmed 2004 Silverado 1500 PCM 12586242, you are not just replacing a part; you are restoring your vehicle’s core operational integrity with the latest GM software updates for optimal performance.
Features & Benefits
- ✔ VIN-Specific Programming: We flash the module with your vehicle’s VIN, ensuring it works seamlessly with your existing keys and security system right out of the box.
- ✔ Plug & Play Installation: No need for an expensive trip to the dealership for programming. Once you receive the part, you can install it and start your vehicle.
- ✔ Updated GM Software: Your module arrives with the newest software updates from General Motors, which can improve fuel efficiency, transmission shifting, and overall engine performance.
- ✔ Guaranteed Compatibility: This unit is a direct replacement for service numbers 12586242, 19299226, 89017738, YFKD, YFKF, YFKH, YFKJ, YFKX, YFXL, YFXM, YFXN, YFXP, and YHTN.
- ✔ Peace of Mind: This unit is backed by our one-year replacement warranty.
Expert Insight: The Importance of VIN Programming
As a technician with over two decades of experience, I’ve seen countless issues arise from improperly matched control modules. In modern GM vehicles, the PCM is the central hub of a complex network. Flashing it with your specific VIN isn’t just a convenience—it’s essential. This process correctly configures the module for your engine, transmission, and all factory options. More importantly, it synchronizes the anti-theft system (Passlock/VATS). Skipping this step can result in a vehicle that won’t start, even with a brand new part. We handle this critical step for you, so you can be confident your repair will be successful the first time.
Frequently Asked Questions
How do I provide my VIN number?
After you complete your purchase, you will need to send us your 17-digit Vehicle Identification Number (VIN). You can typically add it as a note during checkout or send it to us in a message referencing your order number. We cannot ship your part until we receive the VIN.
Do I need to have this programmed by a dealer after I install it?
No. The main benefit of our service is that we handle all the programming for you. The module will arrive ready to be installed, and your vehicle should start and run correctly without any additional programming required.
What if my original part number doesn’t match exactly?
This module replaces several different service numbers. As long as your original module’s service number is on our compatibility list (e.g., YFKJ, YFXL, 19299226), this unit will be the correct replacement once programmed to your VIN.
Is a CASE relearn required after installation?
In some cases, a Crankshaft Variation (CASE) relearn may be needed to turn off the check engine light and ensure perfect timing calibration. This is a simple procedure that can be performed with most professional-grade scan tools and is not a sign of a defective part.
Will this fix my specific problem?
This 2004 Silverado 1500 PCM 12586242 is the solution for failures within the module itself. While it resolves the most common electronic engine and transmission issues, we always recommend a proper diagnosis by a qualified mechanic to confirm the PCM is the source of your problem before ordering.