Is Your GM Truck or SUV Experiencing Frustrating Engine Problems?
If your 2004 Chevrolet, GMC, Cadillac, or Isuzu is suffering from stalling, erratic shifting, a persistent Check Engine Light, or a complete no-start condition, a failing Powertrain Control Module (PCM) is often the culprit. This critical component is the brain of your vehicle, and when it fails, it can cause a wide range of issues that leave you stranded and stressed. Don’t let a faulty computer keep your reliable workhorse or family vehicle off the road. This is the direct, reliable solution you need to restore its performance and dependability.
Common Symptoms & Your Solution
A failing engine computer can manifest in numerous ways. You might be experiencing one or more of the following:
- Check Engine Light: Illumination with communication-related codes (U-codes) or internal processor failure codes (like P0601, P0606).
- No-Start Condition: The engine cranks but refuses to start due to a lack of fuel or spark commands from the PCM.
- Poor Performance: Noticeable loss of power, poor fuel economy, and rough idling.
- Erratic Shifting: The transmission may shift harshly, get stuck in a gear, or not shift at all.
- Stalling: The engine may stall intermittently, especially when coming to a stop or at idle.
This Programmed 12586242 PCM Engine Computer is the definitive solution to these problems. We take all the guesswork out of the repair by flashing the module with the latest OEM-approved software specifically for your vehicle’s VIN. It arrives ready to install, saving you a costly trip to the dealership for programming.
Features & Benefits
- ✔ VIN-Specific Programming: Arrives pre-programmed for your exact vehicle. This ensures seamless communication with your vehicle’s other modules for a true plug-and-play installation.
- ✔ Restored Engine Performance: Corrects issues with fuel mixture, spark timing, and transmission control to bring back the smooth, reliable power you expect.
- ✔ Updated GM Software: We flash the unit with the newest updates from GM, which can resolve factory bugs and improve overall vehicle operation.
- ✔ Direct-Fit Solution: Engineered to be a direct replacement for service numbers 12586242, 19299226, 89017738, and many others, ensuring a perfect fit.
- ✔ This unit is backed by our one-year replacement warranty. Get peace of mind knowing your purchase is protected.
Expert Insight: Why VIN Programming is Non-Negotiable
As a technician with over two decades of experience, I’ve seen countless vehicle owners buy a used computer online only to find it won’t work. On these 2004 GM vehicles, the PCM is tied directly to the anti-theft system (Passlock/VATS), transmission type, and specific engine options. Simply swapping a module without correct VIN programming will almost always result in a no-start condition or severe shifting problems. Our pre-programming service isn’t just a convenience—it’s the critical step that makes this repair possible for a DIYer or independent shop, ensuring the vehicle accepts the new module and runs correctly from the moment you turn the key.
Frequently Asked Questions
Do I need to do any additional programming after installation?
No. This unit comes fully programmed to your VIN. However, you will need to perform a simple security relearn procedure after installation, which takes about 30 minutes and requires only your vehicle’s key. We provide easy-to-follow instructions for this process.
How do I provide my Vehicle Identification Number (VIN)?
After you complete your purchase, simply send us a message with your 17-digit VIN. We cannot ship your order until we receive this information, as it is required for programming the Programmed 12586242 PCM Engine Computer.
How can I be sure this is the correct part for my truck/SUV?
Please match your original module’s service number to one of the numbers listed in the description (e.g., 12586242, YFXN, YHTN). If you are unsure, contact us with your VIN, and our experts will verify the correct fitment for you.
What is the security relearn procedure?
The security relearn syncs the new PCM with your vehicle’s anti-theft system. The standard procedure involves turning the key to the ‘ON’ position for 10 minutes, then ‘OFF’ for 10 seconds, and repeating this cycle three times. This allows the components to communicate and authorize the new module.
What does the one-year replacement warranty cover?
The warranty covers any failure of the unit itself for a full year from the date of purchase. If the module fails within this period, we will provide a replacement unit. The warranty does not cover issues caused by other faulty components on the vehicle.