Restore Your Vehicle’s Brain and Get Back on the Road
Is your truck or SUV running rough, stalling unexpectedly, or flashing a persistent Check Engine Light? A failing Powertrain Control Module (PCM) is often the culprit, leaving you stranded and frustrated. This replacement PCM, bearing service number 12586242, is the definitive solution to restore your vehicle’s performance and reliability. We take the guesswork and hassle out of the repair by pre-programming the unit specifically for your vehicle using your VIN. It arrives ready to install, saving you a costly trip to the dealership and getting you back to work or on your way without delay.
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 correct these problems:
- Erratic or harsh transmission shifting
- Poor fuel economy
- Engine stalling, stumbling, or misfiring
- No-start conditions where the engine cranks but won’t fire
- Illuminated Check Engine Light with codes like P0601, P0602, P0606, or other communication errors
Installing this professionally programmed 12586242 PCM is the most effective way to resolve these critical issues and restore your engine’s factory-level operation.
Features & Real-World Benefits
- ✔ VIN-Specific Programming: We flash the module with your vehicle’s exact VIN and the latest GM software updates. This ensures perfect communication with your vehicle’s systems right out of the box.
- ✔ Plug & Play Installation: Because it’s pre-programmed, you can avoid expensive dealership programming fees. In most cases, installation is a straightforward process requiring only basic hand tools.
- ✔ Restored Performance: A new, properly functioning computer corrects fuel trim, ignition timing, and transmission shift points, bringing back the smooth power and efficiency you depend on.
- ✔ Broad Compatibility: This unit directly replaces a wide range of service numbers, including 19299226, 89017738, YFKD, YFKF, YFKH, and more, for dozens of 2004 GM models.
- ✔ Peace of Mind: This unit is backed by our one-year replacement warranty.
From the Shop Floor: A Technician’s Note
I once had a contractor bring in his ’04 Silverado 3500 dually. The truck was his livelihood, but it was randomly stalling at job sites. He was losing money and his reputation was on the line. After diagnosing a failed computer (DTC P0601), we installed a programmed 12586242 PCM for him. The relief on his face when the truck fired up instantly and idled perfectly was immediate. He was back on the road in under an hour, confident that his most important tool was reliable again. That’s what this part does—it doesn’t just fix a vehicle, it solves a major life problem.
Frequently Asked Questions
Do I need to have this computer programmed?
No. We handle all the programming for you before shipment. After you place your order, you will need to provide us with your vehicle’s VIN. We use that to load the correct, updated software so the part is ready for installation upon arrival.
How do I find my correct part or service number?
Your original PCM will have a sticker on it with the service number (SERV. NO.). You can match that number to the list provided in this description, which includes 12586242, 19299226, 89017738, and many others, to confirm a direct match.
Will this fix my specific problem?
This module is the solution for issues directly caused by a failing computer, such as internal processor faults (e.g., code P0601) or communication errors. While it corrects many common symptoms, it’s always best to have a proper diagnosis performed to ensure the PCM is the root cause of your issue.
Is any additional setup required after installation?
In many cases, no. However, some GM vehicles of this era have anti-theft systems (Passlock/VATS) that may require a simple security relearn procedure after installation. This procedure can typically be done without special tools and instructions are widely available online or in service manuals.
What information do you need from me?
After your purchase, the only thing we need is your 17-digit Vehicle Identification Number (VIN). This allows us to create a perfect software match for your truck or SUV’s specific options and configuration.