Restore Your Truck’s Dependability
Is your 2004 GMC Yukon XL 1500 acting up? Unexplained stalling, a persistent check engine light, or rough running can be incredibly frustrating, especially when you rely on your SUV for daily duties. A failing Powertrain Control Module (PCM) is often the culprit, acting as the vehicle’s brain and controlling everything from fuel mixture to transmission shifting. This replacement engine computer is the definitive solution to get your trusted Yukon back to the reliable workhorse it was meant to be.
Common Failure Symptoms & Your Direct Solution
If you’re experiencing any of the following issues, a faulty PCM is the likely cause. This pre-programmed unit is designed to resolve these problems and restore factory performance.
- Check Engine Light (CEL) with communication-related codes (e.g., U-codes)
- Diagnostic Trouble Codes (DTCs) for internal module failure, such as P0601, P0602, P0603, P0604, P0605, or P0606
- Erratic engine performance, including misfires, poor fuel economy, or hesitation
- Intermittent or complete no-start conditions
- Harsh or incorrect transmission shifting
- Failure to pass state emissions testing
By ordering this 2004 Yukon XL 1500 PCM, you are getting a direct-fit component that has been meticulously programmed with the latest GM software updates specifically for your vehicle’s VIN. This eliminates guesswork and ensures a seamless installation process.
Features & Benefits
- ✔ VIN-Specific Programming: We flash the module with your vehicle’s exact VIN, ensuring it works perfectly with your specific options and systems right out of the box.
- ✔ Plug-and-Play Installation: No need for an expensive trip to the dealership for programming. Once installed, you may only need to perform a simple security relearn procedure, which can be done without special tools.
- ✔ Restored Performance & Efficiency: With updated software and correct parameters, your engine will operate as the manufacturer intended, restoring lost power and fuel economy.
- ✔ Guaranteed Compatibility: This unit is a direct replacement for service number 12586242 and a wide range of other service numbers listed in the fitment guide, ensuring it’s the right part for the job.
- ✔ Peace of Mind: This unit is backed by our one-year replacement warranty.
Expert Technician’s Tip: Before replacing your 2004 Yukon XL 1500 PCM, always verify your vehicle’s battery is fully charged and that all main power and ground connections to the engine and chassis are clean and tight. A poor ground connection can mimic the symptoms of a failed computer, so a few minutes of inspection can save you time and money.
Frequently Asked Questions
How does the programming process work?
After you complete your purchase, you will need to provide us with your vehicle’s 17-digit VIN. We use this to load the latest, most updated GM calibration file directly onto the module. This ensures it is a perfect match for your truck’s engine, transmission, and factory options.
Will I need to do anything after I install it?
In most cases, you will need to perform a security relearn procedure (also known as a CASE learn or Passlock relearn). This syncs the new PCM with your vehicle’s anti-theft system. The procedure is simple and typically involves a series of key cycles. We include instructions to guide you through it.
Is this the correct part for my vehicle?
This PCM fits a wide variety of 2004 GM trucks and SUVs. Please check the fitment list and verify that your existing module has one of the compatible service numbers (such as 12586242, YFKD, YFKF, etc.) printed on its label to ensure a perfect match.
Do I need to send my old computer back?
No core charge or return is required for this part. You can keep your old module or recycle it locally.
What if my part number isn’t on the list?
If you cannot find your service number in the compatibility list, please contact us with your vehicle’s VIN and the number from your original PCM. We will be happy to help you find the correct module for your application.