Restore Peak Performance to Your GM Truck or SUV
Is your 2004 GMC Yukon, Sierra, or Silverado plagued by frustrating issues like a persistent check engine light, rough idling, stalling, or a complete no-start condition? These are classic signs of a failing Powertrain Control Module (PCM), the central computer that manages your vehicle’s engine and transmission. Don’t let a faulty computer keep your reliable truck off the road. This professionally programmed PCM is the definitive, hassle-free solution to restore your vehicle’s performance and get you back behind the wheel with confidence.
Common Symptoms of a Failing GM PCM & Your Solution
A failing engine computer can cause a wide range of confusing problems. If you’re experiencing any of the following, this module is your answer:
- Check Engine Light (CEL): Particularly for internal module error codes like P0601, P0602, or P0606.
- Poor Engine Performance: Noticeable loss of power, decreased fuel economy, and hesitation during acceleration.
- Intermittent Stalling or No-Start: The vehicle may stall unexpectedly or refuse to start, often without a clear pattern.
- Erratic Shifting: The transmission may shift harshly, at the wrong times, or not at all.
- Communication Errors: Your mechanic’s scan tool may be unable to communicate with the PCM.
This isn’t just a replacement part; it’s a complete solution. We use your vehicle’s unique Vehicle Identification Number (VIN) to flash this programmed 2004 Yukon PCM 12586242 with the latest, most stable software updates directly from GM. This critical step ensures all components communicate perfectly, restoring the precise performance and efficiency your vehicle had when it was new.
Features & Benefits
- ✔ VIN-Specific Programming: Arrives ready for installation, pre-programmed to your exact vehicle. This eliminates the need for expensive dealership programming.
- ✔ Latest GM Software: We flash the unit with the most current factory updates, ensuring optimal performance, fuel efficiency, and emissions control.
- ✔ Direct-Fit Replacement: Guaranteed to fit and function correctly for all compatible service numbers, including 12586242, YFKD, YFKF, YFKH, and more.
- ✔ Solves Complex Issues: The definitive fix for common electronic and drivability problems, turning off that stubborn check engine light for good.
- ✔ This unit is backed by our one-year replacement warranty.: Drive with confidence knowing your purchase is protected.
Expert Insight from a 20-Year Veteran Technician
Over my decades under the hood, I’ve seen countless drivability nightmares caused by mismatched or unprogrammed control modules. A generic computer from a shelf is a recipe for trouble, leading to everything from transmission failures to persistent no-start conditions. That’s why we insist on programming every single module to your specific VIN. It’s not just about getting the engine to run; it’s about ensuring the entire vehicle network—from the ABS to the instrument cluster—communicates flawlessly, just as the engineers intended. This programmed 2004 Yukon PCM 12586242 is the right way to do the job.
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 (also known as a CASE relearn or Passlock relearn). This simple procedure can be done without any special tools and typically involves a sequence of turning the key on and off. Instructions are readily available online for your specific model, and this synchronizes the new PCM with your vehicle’s anti-theft system.
How do I provide my Vehicle Identification Number (VIN)?
After you complete your purchase, you will need to send us your 17-digit VIN. You can typically add it as a note during checkout or send it to us in a message referencing your order number. We cannot program or ship your part without it.
Will this work if my original part has a different service number?
Yes. This PCM, part number 12586242, is the correct hardware replacement for a wide range of service numbers listed in the description, including YFKD, YFKF, YFKH, YFKJ, YFKX, and many others. As long as your vehicle is on the compatibility list, this module will work perfectly when programmed to your VIN.
What does “flashed with the newest updates” mean for my truck?
Vehicle manufacturers like GM often release software updates to address issues discovered after a vehicle is sold. These can improve transmission shifting, fuel economy, and idle stability. By flashing your module with the latest version, you’re getting a computer that performs better than the one that originally came in your vehicle.
Will this fix my specific check engine light codes?
This module is a guaranteed fix for any codes related to internal PCM failure, such as P0601 through P0606. If your check engine light is caused by a faulty sensor or mechanical issue (like an oxygen sensor or vacuum leak), you will still need to repair that underlying problem. A proper diagnosis is always recommended.