Restore Your GM Truck’s Core Performance
Is your 2004 GMC Yukon, Sierra, or Silverado plagued by frustrating issues like a persistent check engine light, poor fuel mileage, or erratic shifting? These are classic signs of a failing Powertrain Control Module (PCM), the central computer of your vehicle. Before you resign yourself to a costly and time-consuming visit to the dealership, consider the smart, direct solution. This replacement PCM is the key to getting your dependable truck or SUV back to running the way it should.
Common Symptoms of a Failing PCM & Your Direct Solution
A faulty engine computer can cause a wide range of problems that can be difficult to diagnose. If you’re experiencing any of the following, a failing PCM is a likely cause:
- Rough or unstable idling
- Reduced fuel economy
- Engine stalling or hesitation during acceleration
- Failure to pass emissions testing
- Transmission shifting harsh or at the wrong times
- Check Engine Light (CEL) with communication-related Diagnostic Trouble Codes (DTCs)
This professionally programmed 2004 GMC Yukon XL 2500 PCM 12586242 is the definitive fix for these issues. We take a quality, inspected module and flash it with the latest official GM software calibrations, specifically matched to your vehicle’s unique VIN. This ensures a perfect, seamless integration, restoring the precise engine and transmission control your vehicle had when it was new.
Features & Benefits
- โ VIN-Programmed for Your Vehicle: This isn’t a generic, one-size-fits-all part. We program it to your exact VIN, so it arrives ready for installation, saving you hundreds in dealership programming fees.
- โ Updated GM Software: Your module will be loaded with the newest calibrations from General Motors, which often correct original factory drivability issues and improve overall efficiency.
- โ Plug-and-Play Installation: For most vehicles, installation is straightforward. Simply disconnect the battery, swap the modules, and reconnect. No special tools are required for the swap itself.
- โ Restores Peak Operation: By replacing the failing brain of your vehicle, you’ll solve those nagging performance problems and regain the reliable power and smooth operation you depend on.
- โ Broad GM Compatibility: This unit is a direct replacement for service number 12586242 and a wide range of other service numbers, fitting dozens of 2004 GM trucks and SUVs.
- โ One-Year Replacement Coverage: This unit is backed by our one-year replacement warranty, giving you confidence and peace of mind in your repair.
Expert Technician’s Insight: As a technician with over 20 years on the floor, I’ve seen countless vehicle owners waste time and money on used computers from a salvage yard. For these 2004 GM trucks and SUVs, the PCM is not just a simple swap. It’s tied to your vehicle’s security system (VATS/Passlock) and has specific calibrations for your engine, transmission, and options. Our VIN-specific programming for the 2004 GMC Yukon XL 2500 PCM 12586242 handles all of that for you. We ensure the software is correct and up-to-date, so you can avoid compatibility headaches and get your rig back on the road fast.
Don’t let a faulty computer keep your workhorse in the driveway. This is the most effective and efficient way to restore its health. By providing us with your VIN upon purchase, you ensure that the 2004 GMC Yukon XL 2500 PCM 12586242 you receive is perfectly tailored to your vehicle’s specifications.
Frequently Asked Questions
Do I need to do any programming myself?
No. We program the computer to your vehicle’s VIN before shipping. In most cases, it’s a simple plug-and-play installation, though some vehicles may require a security or crankshaft variation relearn procedure.
What is a “CASE Relearn” and will I need one?
A Crankshaft Variation Relearn (CASE) may be required after installation to prevent a P1336 trouble code. This procedure calibrates the crankshaft position sensor to the new module and can be performed by most repair shops with a capable scan tool.
How do I provide my VIN?
After placing your order, simply reply to your order confirmation email or send us a message with your 17-digit Vehicle Identification Number (VIN). We must have your VIN to program and ship your part.
How do I know if this is the right part for my vehicle?
The best way is to match the service number from your original computer to one of the numbers listed in our description (e.g., 12586242, 19299226, 89017738). This ensures a perfect physical and electronic match for your 2004 GM vehicle.
Is this compatible with my 2004 Hummer H2 or Escalade?
Yes, this PCM is compatible with a wide range of 2004 GM trucks and SUVs, including the Hummer H2, Cadillac Escalade, Chevy Tahoe, Suburban, Avalanche, and many more, as long as the service number on your original part matches our list.