Restore Your Vehicle’s Performance and Reliability
Is your 2004 GM truck or SUV suffering from frustrating issues like stalling, erratic shifting, a persistent check engine light, or a no-start condition? A failing Powertrain Control Module (PCM) is often the culprit, acting as the brain of your vehicle’s engine and transmission. This replacement PCM, compatible with service number 12586242, is the definitive solution to get your vehicle back on the road, running as it should. We take the guesswork out of the repair by programming the unit specifically to your vehicle’s VIN before it ships, ensuring a straightforward installation process.
Common Symptoms & Your Solution
If you’re experiencing any of the following, a faulty engine computer is the likely cause. This pre-programmed module is designed to resolve these exact problems:
- Check Engine Light with communication-related codes (e.g., P0601, P0606)
- Poor fuel economy
- Harsh or incorrect transmission shifting
- Engine stalling, misfiring, or running rough
- Complete no-start condition where the engine cranks but won’t fire
- Instrument cluster warning lights or messages
By installing our expertly programmed 2004 GM 12586242 PCM, you’re not just replacing a part; you’re restoring your vehicle’s core operational integrity and your peace of mind.
Features & Benefits
- ✔ Plug & Play Ready: Arrives pre-programmed to your vehicle’s exact VIN. No additional dealer programming is required.
- ✔ Updated Software: Flashed with the latest GM-approved software updates to enhance performance and efficiency.
- ✔ Solves Drivability Issues: Engineered to correct common engine and transmission problems caused by a failing original computer.
- ✔ Guaranteed Compatibility: A direct replacement for service numbers 12586242, 19299226, 89017738, YFKD, YFKF, YFKH, YFKJ, and more.
- ✔ Reliable Operation: Each unit is meticulously inspected and programmed to ensure it meets strict quality standards.
- ✔ Warranty Protection: This unit is backed by our one-year replacement warranty.
Expert Insight: The Importance of VIN Programming
Many people assume you can just swap a computer from another truck. On these 2004 GM vehicles, that’s a recipe for failure. The PCM is tied directly to the vehicle’s anti-theft system (VATS/Passlock) and other modules. Without correct VIN programming, the vehicle simply will not start. Our service eliminates this critical roadblock. We handle the complex programming, so when you receive your 2004 GM 12586242 PCM, it communicates seamlessly with your vehicle, allowing for a much simpler installation and security relearn process.
Frequently Asked Questions
Do I need to do any programming after I receive it?
No. We program the module to your VIN before shipping. The only thing you may need to perform is a simple security relearn procedure, which takes about 30 minutes and requires only your vehicle’s key. We provide instructions for this easy process.
How do I provide my Vehicle Identification Number (VIN)?
After you complete your purchase, you will receive instructions on how to send us your 17-digit VIN. We cannot ship your part until we receive this information, as the programming is essential.
Will this fix my check engine light?
If the check engine light is caused by an internal failure of the PCM (such as code P0601), this replacement unit is the correct fix. However, you must ensure that the root cause of any other codes (e.g., a faulty sensor) has been repaired first, as the PCM can only operate with good data from the vehicle’s sensors.
Is this a brand new part?
This is a professionally serviced and tested original equipment part. Each module undergoes a rigorous inspection and programming process to ensure it functions to OEM specifications, providing a reliable and cost-effective alternative to a new dealership part.
Where is this module located on my vehicle?
On most compatible models like the Silverado, Sierra, Tahoe, and Suburban, the PCM is located in the engine bay on the driver’s side, under the battery or near the fender. On models like the Envoy, Trailblazer, and Rainier, it is typically found next to the air filter box.