Is Your Truck or SUV Running Rough? Get It Back in Prime Condition.
There’s nothing more frustrating than a vehicle you can’t rely on. If your 2004 GMC Yukon, Silverado, Tahoe, or another compatible GM vehicle is suffering from a persistent check engine light, stalling, poor fuel economy, or unpredictable performance, a failing Powertrain Control Module (PCM) is often the culprit. This isn’t just an annoyance; it’s a core issue that affects your vehicle’s reliability and safety. Instead of guessing with junkyard parts or paying steep dealership prices, get the definitive solution that restores your vehicle’s brain to perfect working order.
Common Symptoms of a Failing GM PCM & Your Direct Solution
A faulty engine computer can cause a wide range of confusing issues. If you’re experiencing any of the following, this pre-programmed module is your solution:
- Check Engine Light: Particularly for communication error codes like P0601, P0602, P0604, or P0606.
- No-Start or Hard-Start: The engine cranks but refuses to start, or only starts after multiple attempts.
- Stalling and Rough Idle: Your vehicle may stall unexpectedly at stops or idle erratically.
- Poor Fuel Economy: A sudden and unexplained drop in your MPG is a classic sign the PCM is not managing the engine efficiently.
- Failed Emissions Test: Inability to pass smog is often directly linked to a malfunctioning PCM.
- Erratic Transmission Shifting: The PCM plays a key role in controlling shift points in automatic transmissions.
This listing is for a replacement 2004 GMC Yukon PCM 12586242 that is professionally programmed to your vehicle’s specific Vehicle Identification Number (VIN). This ensures that it works seamlessly with your factory equipment, just as the original did.
Features & Benefits
- ✔ VIN-Programmed for Your Vehicle: We flash the unit with the latest GM-certified software using your VIN. This makes installation straightforward and eliminates the need for expensive dealer programming.
- ✔ Restored Performance & Efficiency: A properly functioning PCM ensures optimal engine timing, fuel delivery, and transmission control, bringing back the power and fuel economy you expect.
- ✔ Direct-Fit Replacement: Guaranteed to fit and function in all vehicles listed, this module matches service number 12586242 and a wide range of compatible broadcast codes.
- ✔ Cost-Effective Solution: Get a reliable, ready-to-install part without the high costs and hassle associated with a dealership service department.
- ✔ Peace of Mind Included: This unit is backed by our one-year replacement warranty.
An Expert’s Note on VIN Programming
As a technician with over two decades of experience, I’ve seen countless vehicle issues caused by improperly matched control modules. Simply grabbing a used computer from another truck won’t work on these GM vehicles due to the integrated anti-theft systems (VATS/Passlock). Our VIN programming service is the most critical step. We don’t just load generic software; we match the new PCM to your vehicle’s exact factory configuration. This prevents no-start security lockouts, transmission compatibility problems, and other frustrating issues, ensuring the computer communicates perfectly with all other modules in your vehicle from the moment you install it.
Take the guesswork out of your repair. By ordering this pre-programmed 2004 GMC Yukon PCM 12586242, you are getting a reliable, professionally prepared component that is ready to restore your vehicle’s dependability. Just provide your VIN at checkout and get ready to enjoy a smooth-running truck or SUV once again.
Frequently Asked Questions
How do I provide my vehicle’s VIN?
After you complete your purchase, you will need to send us your 17-digit Vehicle Identification Number (VIN). You can typically find this on your vehicle’s registration, insurance card, or on a placard on the driver’s side dashboard visible through the windshield.
Is this a plug-and-play installation?
Yes, because we program the PCM to your VIN, it is designed to be a direct, plug-and-play installation. In most cases, no further programming is required. However, some vehicles may require a simple security relearn procedure, which can be done without special tools and instructions can be provided.
How do I know if this will fix my specific problem?
This PCM will fix issues directly caused by a faulty engine computer. While the symptoms listed are common indicators, we always recommend a proper diagnosis by a qualified mechanic to confirm the PCM is the point of failure before ordering.
How do I match my part number?
This unit replaces service number 12586242 and many others listed in the description. As long as your vehicle is a 2004 GM truck or SUV from the compatibility list, our VIN programming ensures it will work, even if your original broadcast code (e.g., YFXN, YFKD) is different.
What is the warranty on this part?
This unit is backed by our one-year replacement warranty. This covers the part itself in the event of failure within one year of the purchase date.
Do I need to send my old computer (core) back?
No core charge or return is required for this part. You can keep or responsibly dispose of your old module.