Are you fighting frustrating and intermittent issues with your 2004 GM truck or SUV? A faulty Powertrain Control Module (PCM) can be the hidden cause of everything from poor engine performance and erratic shifting to a complete no-start condition. Restore the reliability and performance of your vehicle with this professionally programmed 2004 GMC Yukon 12586242 PCM. This isn’t just a replacement part; it’s a direct, ready-to-install solution engineered to get your truck back on the road with confidence.
Common Symptoms & Your Solution
A failing engine computer can manifest in numerous ways, often mimicking other component failures. If you’re experiencing any of the following, a faulty PCM is a likely culprit:
- Check Engine Light with communication-related Diagnostic Trouble Codes (DTCs) like P0601, P0602, or P0606.
- Rough or unstable idle.
- Poor fuel economy and loss of power.
- Harsh or unpredictable transmission shifting.
- Engine stalling or refusing to start, even with a good battery and starter.
- Intermittent electrical problems that seem to have no other source.
This module is the definitive solution, arriving at your door programmed with the latest GM software updates specifically for your vehicle. We use the VIN you provide during checkout to ensure perfect compatibility, eliminating the need for an expensive trip to the dealership for programming.
Features & Benefits
- ✔ VIN-Programmed for You: We flash this computer with your vehicle’s specific VIN, ensuring it’s ready for a straightforward installation right out of the box.
- ✔ Latest GM Software: Your module comes loaded with the newest updates from General Motors, which can improve drivability, fuel efficiency, and overall performance.
- ✔ Direct-Fit Replacement: Guaranteed to be a perfect match for service numbers 12586242, 19299226, 89017738, YFKD, YFKF, YFKH, YFKJ, YFKX, YFXL, YFXM, YFXN, YFXP, and YHTN.
- ✔ Solves Complex Issues: Effectively resolves persistent engine performance problems, transmission control faults, and communication errors that have you chasing ghosts.
- ✔ Get Back on the Road Fast: This plug-and-play solution is designed to minimize your vehicle’s downtime and get you back to your routine.
- ✔ Peace of Mind Included: This unit is backed by our one-year replacement warranty.
Expert Insight: The Power of Proper Programming
As a technician with over two decades of experience, I’ve seen countless vehicle owners buy a used computer online only to find it won’t work because it’s still programmed to the donor vehicle. This creates a ‘bricked’ component that requires expensive dealer tools to fix. Our process eliminates that entire headache. By programming the 2004 GMC Yukon 12586242 PCM to your VIN before we ship, we ensure the module communicates correctly with your truck’s security system, transmission, and all other onboard modules from the moment you install it. It’s the single most important step for a successful repair.
Guaranteed Fitment
This Electronic Control Module is a direct replacement for the following 2004 GM models. Please verify your service number (found on the module’s sticker) matches one of the numbers listed above to ensure compatibility.
Fits various 2004 models including: Avalanche 1500, Escalade (ESV, EXT), Hummer H2, Isuzu Ascender, Rainier, Sierra (1500, 2500, 3500, Denali), Silverado (1500, 2500, 3500), SSR, Suburban (1500, 2500), Tahoe, Trailblazer EXT, Envoy (XL, XUV), and Yukon (XL 1500, XL 2500).
Replacing your faulty 2004 GMC Yukon 12586242 PCM is the most effective way to restore your vehicle’s factory performance and dependability.
Frequently Asked Questions
How does the VIN programming process work?
After you complete your purchase, you will need to provide us with your vehicle’s 17-digit Vehicle Identification Number (VIN). Our technicians use this VIN to flash the computer with the exact software and calibrations your specific vehicle requires from the factory.
Will I need to do any additional programming after installation?
No, the module arrives fully programmed for engine and transmission functions. However, on many GM vehicles, you may need to perform a simple security relearn procedure (often called a CASE relearn or Passlock relearn) which can typically be done without special tools. Instructions are widely available online or in service manuals.
How do I find my original part or service number?
The service number is printed on a sticker on the case of your current engine computer. You will need to locate the module in your vehicle (typically under the hood, near the battery or airbox) to read this number.
Can a bad PCM cause my truck to not start?
Absolutely. The PCM controls the fuel injectors and ignition coils. If the module fails, it can prevent spark or fuel from being delivered, resulting in a crank-no-start condition. It can also fail to communicate with the security system, immobilizing the vehicle.
What is the warranty on this computer?
This unit is backed by our one-year replacement warranty, giving you confidence in your repair.