Restore Peak Performance to Your GM Truck or SUV
Is your 2004 Suburban, Sierra, or Tahoe suffering from frustrating issues like a persistent check engine light, erratic shifting, a rough idle, 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 you off the road. This professionally programmed PCM is the definitive, hassle-free solution to restore your vehicle’s reliability and drivability.
Common Symptoms of a Failing PCM & Your Direct-Fit Solution
A failing engine computer can cause a wide range of problems that can be difficult to diagnose. If you’re experiencing any of the following, a faulty PCM is the likely culprit:
- Check Engine Light: Often with communication error codes like P0601, P0602, or P0606.
- Engine Performance Issues: Stalling, hesitation, poor acceleration, and decreased fuel economy.
- Transmission Problems: Harsh or delayed shifting, or getting stuck in one gear.
- No-Start Condition: The engine cranks but won’t start, even with a good battery and starter.
- Intermittent Electrical Issues: Gauges behaving erratically or other strange electronic behavior.
This unit is your direct solution. We take a genuine OEM module and program it with the latest GM-certified software specifically for your vehicle using the VIN you provide. This ensures that your 2004 Suburban 1500 PCM 12586242 arrives ready to install, perfectly matched to all of your truck’s specific options and systems.
Features & Benefits
- ✔ Plug & Play Installation: Arrives pre-programmed to your vehicle’s unique VIN. No additional programming or dealer visits are required.
- ✔ Latest GM Software Updates: Flashed with the most current calibrations from General Motors to optimize engine efficiency, transmission performance, and emissions.
- ✔ Guaranteed Compatibility: A direct replacement for service numbers 12586242, 19299226, 89017738, YFKD, YFKF, YFKH, YFKJ, YFKX, YFXL, YFXM, YFXN, YFXP, and YHTN.
- ✔ Solves Common Drivability Issues: The definitive fix for issues caused by a faulty original computer, restoring smooth operation and power.
- ✔ Cost-Effective Solution: Get the reliability of a correctly programmed module without the high cost and scheduling headaches of a dealership service center.
- ✔ Peace of Mind: This unit is backed by our one-year replacement warranty.
A Technician’s Tip: Why VIN-Specific Programming is Crucial
Many people think they can just grab a used computer from a junkyard and plug it in. For modern GM vehicles, this simply won’t work. Your vehicle’s PCM is tied directly to its Vehicle Anti-Theft System (VATS/Passlock). A mismatched computer will prevent the vehicle from starting. Furthermore, the programming dictates critical parameters like transmission type, gear ratios, and emissions equipment. Our VIN-specific programming ensures all these systems communicate perfectly, just as they did from the factory, giving you a seamless and successful repair.
By ordering this pre-programmed 2004 Suburban 1500 PCM 12586242, you are choosing a reliable and straightforward path to getting your truck back in top condition. Simply provide your VIN after purchase, and we’ll handle the complex programming so you can focus on the simple installation.
Frequently Asked Questions
Will I need to have this computer programmed by a dealer?
No. This computer comes fully programmed to your vehicle’s VIN before it ships. It is designed for a plug-and-play installation, requiring no further programming or flashing.
How do I provide my vehicle’s VIN?
After you complete your purchase, we will send you instructions on how to reply with your vehicle’s 17-digit VIN. We cannot ship the part until we receive your VIN, as the programming is essential for it to function.
How can I be sure my old PCM is the problem?
Common signs include a check engine light with communication codes (like P0601), stalling, erratic shifting, and no-start conditions. While these are strong indicators, we always recommend having a qualified mechanic perform a full diagnostic test to confirm the PCM is the point of failure before ordering.
Is this compatible with other part numbers?
Yes, this computer is a direct replacement for a wide range of service numbers, including 12586242, 19299226, 89017738, and many others listed in the full fitment data. Please check the list to confirm your part number is included.
What is the warranty on this part?
This unit is backed by our one-year replacement warranty.
Does this 2004 Suburban 1500 PCM 12586242 require a security relearn procedure?
In most cases, our programming makes the unit ready to go upon installation. However, on some GM vehicles of this era, a simple 10-minute security relearn procedure may be necessary. This procedure does not require any special tools and instructions can be easily found online or provided by our support team.