Restore Your Truck’s Performance and Reliability
Is your 2004 Silverado, Sierra, or other GM truck plagued by frustrating issues like a persistent check engine light, rough idling, stalling, or poor fuel economy? These are classic signs of a failing Powertrain Control Module (PCM). Don’t let a faulty computer keep you off the road or stuck with a vehicle you can’t depend on. This professionally programmed engine computer, part number 12586242, is the direct, reliable solution to get your truck running like it should.
Common Symptoms & Your Solution
A failing PCM can cause a wide range of confusing problems. If you’re experiencing any of the following, this module is the definitive fix:
- Erratic engine performance or misfires
- Failure to start or intermittent starting issues
- Poor acceleration and loss of power
- Decreased fuel efficiency
- Harsh or incorrect transmission shifting
- Check Engine Light with Diagnostic Trouble Codes (DTCs) like P0601, P0602, or P0606
This isn’t just a replacement part; it’s a complete solution. We flash this 2004 Silverado 1500 PCM 12586242 with the latest GM-certified software updates and program it specifically to your vehicle’s unique Vehicle Identification Number (VIN). This ensures perfect compatibility and function right out of the box, eliminating the need for an expensive trip to the dealership.
Features & Benefits
- âś” Plug & Play Installation: Arrives pre-programmed to your specific VIN. In most cases, you can install it and get back on the road without needing a scan tool.
- âś” Updated GM Software: We flash the module with the newest calibrations from General Motors, which can improve performance, fuel economy, and emissions over your original unit.
- âś” Guaranteed Compatibility: 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.
- âś” Solves Annoying Drivability Issues: Engineered to resolve the root cause of common engine and transmission problems, restoring smooth and dependable operation.
- âś” This unit is backed by our one-year replacement warranty.
Expert Insight: The Power of a VIN-Programmed Module
As a technician with over 20 years of experience, I’ve seen countless vehicle owners waste time and money on generic, unprogrammed computers. A modern truck’s PCM is incredibly complex; it communicates with dozens of other modules and controls everything from fuel injectors to transmission shift points based on your vehicle’s specific options. Our VIN programming service isn’t a convenience—it’s a necessity. We ensure the module knows if you have a 5.3L or 6.0L, 4WD or 2WD, and all the other factory options. This prevents compatibility errors, warning lights, and performance issues, giving you a repair you can trust.
Complete Fitment List:
This module is a direct fit for the following 2004 models when equipped with the corresponding service number. Please verify your original part number matches one of the following: 12586242, 19299226, 89017738, YFKD, YFKF, YFKH, YFKJ, YFKX, YFXL, YFXM, YFXN, YFXP, YHTN.
Fits various configurations of: Avalanche 1500, Escalade (ESV, EXT), Hummer H2, Sierra (1500, 2500, 3500, Denali), Silverado (1500, 2500, 3500), Suburban (1500, 2500), Tahoe, Yukon (XL 1500, XL 2500), Envoy (XL, XUV), Trailblazer EXT, Rainier, SSR, and Isuzu Ascender. A properly programmed 2004 Silverado 1500 PCM 12586242 is the key to a successful repair.
Frequently Asked Questions
How do I provide my VIN number?
After you complete your purchase, simply send us a message with your 17-digit Vehicle Identification Number (VIN). We cannot ship your part until we receive this information, as the programming is essential for the module to work in your vehicle.
Will I need to do anything else after installation?
In most cases, this is a plug-and-play solution. However, some GM vehicles may require a simple security relearn procedure, which can be done without any special tools and takes about 30 minutes. Instructions are readily available online, or you can ask us for guidance.
Is this a brand new part?
This is a high-quality, tested, and verified original equipment part that has been professionally programmed and updated to ensure it meets or exceeds factory specifications for performance and reliability.
How do I find my original part number?
Your original part number is printed on a sticker on the module itself. For most trucks like the Silverado and Sierra, the PCM is located under the hood on the driver’s side, near the battery. For SUVs like the Trailblazer and Envoy, it is often located next to the air filter box.
What if my original part number isn’t listed?
If your part number is not listed, please contact us with your vehicle’s VIN. We can verify compatibility or help you find the correct module for your specific application.