Restore Peak Performance to Your GM Truck or SUV
Is your 2004 GM truck or SUV suffering from frustrating issues like a persistent check engine light, poor fuel economy, erratic shifting, or even a no-start condition? These are classic signs of a failing Powertrain Control Module (PCM), the electronic brain of your vehicle. Don’t let a faulty computer keep your reliable workhorse off the road. This fully programmed Engine Control Module is the definitive, hassle-free solution to restore your vehicle’s power, reliability, and drivability.
Common Symptoms & Your Solution
A failing PCM can cause a wide range of problems that can be difficult to diagnose. If you’re experiencing any of the following, this part is your answer:
- Unexpected stalling or rough idling
- Reduced power and sluggish acceleration
- Poor fuel mileage
- Harsh or incorrect transmission shifting
- Illuminated Check Engine Light with communication codes (U-codes) or performance codes
- The vehicle won’t start, even with a good battery and starter
This replacement module is precisely programmed to your vehicle’s specific VIN, ensuring it communicates flawlessly with all other onboard systems. By installing this pre-flashed 2004 Suburban 2500 12586242 PCM, you are not just replacing a part; you are restoring the core logic that makes your engine and transmission work in perfect harmony.
Features & Tangible Benefits
- ✔ Plug & Drive Ready: This module arrives programmed to your vehicle’s VIN. No expensive trips to the dealership for flashing are required, saving you significant time and money.
- ✔ Latest GM Software Updates: We flash each unit with the newest, most stable software from General Motors. This can resolve factory bugs and improve overall performance and efficiency.
- ✔ Guaranteed Compatibility: A direct replacement for service numbers 12586242, 19299226, 89017738 and many others. Check the fitment list to confirm it’s the right part for your vehicle.
- ✔ Solves Complex Issues: Corrects a wide array of engine and transmission problems, restoring the smooth and reliable operation you depend on for work or family.
- ✔ Complete Peace of Mind: This unit is backed by our one-year replacement warranty.
Expert Insight: The Power of Proper Programming
As a technician, I’ve seen countless vehicle issues caused by improperly programmed modules. Simply swapping a used computer from another truck often leads to more problems, from security system lockouts to incorrect transmission shift points. That’s why VIN-specific programming is non-negotiable. Our process ensures that the 2004 Suburban 2500 12586242 PCM you receive is not just a compatible part, but the *correct* part for your exact vehicle configuration, ensuring a seamless installation and long-term reliability.
Frequently Asked Questions
Do I need to do anything after I install the computer?
In most cases, you will need to perform a security relearn procedure, which can typically be done without special tools and takes about 30 minutes. Instructions are readily available online for your specific model. Some vehicles may also require a Crankshaft Variation Relearn (CASE Relearn) which requires a scan tool, but the vehicle will still run and drive without it.
How do I provide my vehicle’s VIN?
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 specific to your vehicle.
Is this a brand new part from GM?
This is a high-quality, rigorously tested replacement component that meets or exceeds original equipment specifications. It is programmed with official GM software to ensure perfect operation.
My original part number is different. Will this still work?
Yes. GM often uses multiple service numbers for the same compatible part. This unit replaces a wide range of part numbers, including 12586242, 19299226, 89017738, and many more as listed in the description. As long as your vehicle is on the compatibility list, this module will function correctly.
How can I be sure this is the right 2004 Suburban 2500 12586242 PCM for my truck?
The best way to confirm is to match the service number (like ‘12586242‘) on your current computer’s sticker to the numbers listed in our description. If you’re unsure, feel free to contact us with your VIN, and we’ll be happy to verify compatibility for you.