Restore Your Yukon’s Reliability and Power
Is your 2004 GMC Yukon suffering from frustrating issues like stalling, erratic shifting, or a persistent check engine light? A failing Powertrain Control Module (PCM) is often the culprit, disrupting your vehicle’s core operations and leaving you stranded. This replacement PCM, service number 12586242, is the definitive solution to get your dependable SUV back on the road. We take the guesswork and hassle out of the repair by pre-programming the unit to your vehicle’s specific VIN with the latest GM software updates. This ensures a seamless, plug-and-play installation, saving you a costly and time-consuming trip to the dealership.
Common Symptoms & Your Direct-Fit Solution
If you’re experiencing any of the following, a faulty PCM is the likely cause. This unit is designed to resolve these problems and restore your vehicle’s factory performance.
- Engine stalling or refusing to start
- Harsh or unpredictable transmission shifting
- Poor fuel economy
- Check Engine Light with codes like P0601, P0602, or P0606
- Loss of communication with diagnostic scan tools
- Erratic instrument panel behavior
By ordering our pre-programmed 2004 GMC Yukon PCM 12586242, you’re not just buying a part; you’re getting a complete, ready-to-install solution engineered to make your truck run like new again.
Features & Benefits
- ✔ Plug & Play Installation: Arrives programmed to your specific VIN. No dealership flashing required.
- ✔ Restored Performance: Corrects common running issues, improves fuel efficiency, and ensures smooth shifting.
- ✔ Latest GM Software: Flashed with the most current updates from General Motors for optimal performance and longevity.
- ✔ Guaranteed Compatibility: A direct replacement for service numbers 12586242, 19299226, 89017738, and many others.
- ✔ Peace of Mind: 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 can’t overstate the importance of proper VIN programming on these GM vehicles. The PCM is the central hub, communicating with the transmission, instrument cluster, anti-theft system, and more. An incorrectly programmed or generic module can cause a cascade of issues that are a nightmare to diagnose. Our process ensures every parameter matches your Yukon’s original build, from engine size to axle ratio, guaranteeing a flawless integration and restoring the reliability you depend on.
Complete Fitment List
This module is a direct replacement for a wide range of 2004 GM trucks and SUVs. Please verify your original part has one of the following service numbers: 12586242, 19299226, 89017738, YFKD, YFKF, YFKH, YFKJ, YFKX, YFXL, YFXM, YFXN, YFXP, or YHTN. It is compatible with models including the Escalade, Avalanche, Sierra, Silverado, Suburban, Tahoe, Hummer H2, Envoy, Trailblazer, Rainier, and more.
Frequently Asked Questions
Do I need to do anything after installing the PCM?
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. Some vehicles may also require a Crankshaft Variation Relearn (CASE Relearn) which requires a diagnostic 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 program and ship your module without it. You can find your VIN on your vehicle’s registration, insurance card, or on the driver’s side dashboard viewable through the windshield.
Is this compatible with other part numbers?
Yes, this unit replaces a wide range of service numbers including 12586242, 19299226, 89017738, YFKD, YFKF, YFKH, YFKJ, YFKX, YFXL, YFXM, YFXN, YFXP, and YHTN. As long as your original module has one of these numbers, this is the correct part for you.
Where is the PCM located on my 2004 GMC Yukon?
On the 2004 GMC Yukon and most similar GM trucks and SUVs from this year, the PCM is located in the engine bay on the driver’s side, under the battery tray. You will need to remove the battery to access it.
What makes this a better choice than a used unit from a junkyard?
A used unit will be programmed for the donor vehicle’s VIN and options, causing compatibility issues, a no-start condition, and other problems. Our 2004 GMC Yukon PCM 12586242 is professionally programmed specifically for YOUR vehicle and is flashed with the latest software, ensuring it works correctly right out of the box.