Is Your Truck Running Rough? Get the Right Fix, Right Now.
There’s nothing more frustrating than a vehicle you can’t rely on. If your 2004 Suburban 1500, Silverado, Tahoe, or other compatible GM truck is suffering from a persistent check engine light, erratic performance, or a no-start condition, a failing Powertrain Control Module (PCM) is often the culprit. Instead of dealing with the high costs and long waits at the dealership, get the precise, reliable solution delivered to your door. This engine computer, part number 12586242, is the heart of your vehicle’s operation, and we provide it professionally programmed to your specific Vehicle Identification Number (VIN) with the latest GM software updates.
Common Symptoms & Your Solution
A faulty PCM can cause a wide range of confusing issues. You might be experiencing one or more of the following problems:
- Persistent Check Engine Light (CEL)
- Diagnostic Trouble Codes (DTCs) related to internal module failure (e.g., P0601, P0606)
- Poor engine performance, hesitation, or stalling
- Reduced fuel economy
- Harsh or incorrect transmission shifting
- Complete no-start or intermittent starting problems
This pre-programmed 2004 Suburban 1500 PCM is the definitive solution. We take the guesswork out of the repair by flashing the unit with your vehicle’s unique data before it ships. This ensures that once installed, it communicates perfectly with your engine, transmission, and all other onboard systems, restoring the performance and dependability you expect from your truck.
Features & Real-World Benefits
- ✔ Programmed to Your VIN: We flash the module with your vehicle’s specific VIN and the newest GM software. This means no expensive programming tools or dealership visits are required for setup.
- ✔ Plug-and-Play Installation: Once you receive the unit, installation is straightforward. In most cases, you will only need to perform a simple security relearn procedure, which can be done without special tools.
- ✔ Guaranteed Compatibility: This computer is a direct replacement for service numbers 12586242, 19299226, 89017738, YFKD, YFKF, YFKH, YFKJ, YFKX, YFXL, YFXM, YFXN, YFXP, and YHTN, ensuring a perfect fit and function for a wide range of GM trucks and SUVs.
- ✔ Restored Drivability: By installing a correctly programmed computer with updated software, you’ll restore proper engine timing, fuel delivery, and transmission shift points, bringing back the smooth, reliable operation your vehicle once had.
- ✔ One-Year Replacement Protection: Drive with confidence knowing your investment is secure. This unit is backed by our one-year replacement warranty.
Expert Insight: Why a Pre-Programmed Unit is Essential
From over 20 years of hands-on experience, I can tell you that the P59 controller used in these 2004 GM vehicles is a robust unit, but it’s not immune to failure. We often see issues with the internal drivers that control the ignition coils or fuel injectors, leading to misfires that won’t go away. Simply pulling a computer from a junkyard won’t work—it contains the wrong VIN and security information, and your truck won’t start. Our service bridges that gap. By providing a quality-tested 2004 Suburban 1500 PCM that is already flashed to your vehicle’s specifications, we eliminate the biggest hurdle in this repair, saving you time, money, and immense frustration.
Frequently Asked Questions
Do I need to do anything after I install this PCM?
Yes. While the main engine programming is complete, you will need to perform a security relearn procedure (often called a VATS relearn). This syncs the new PCM with your vehicle’s anti-theft system and keys. This procedure typically takes about 30 minutes and can be done without any special tools. Instructions are readily available online or in your vehicle’s service manual.
How do I provide you with my VIN?
After you complete your purchase, simply send us a message with your 17-digit Vehicle Identification Number (VIN). We cannot ship your part until we receive this information, as the programming is specific to your vehicle.
How can I be sure this is the right part for my vehicle?
The best way is to check the service number on your current computer. This unit is a direct replacement for part number 12586242 and the other service numbers listed in the description. Matching one of these numbers ensures compatibility.
What makes this better than buying a used one from a salvage yard?
A salvage yard unit will have the incorrect VIN and security data, meaning your vehicle will not start. Our PCM is professionally programmed with your VIN and the latest GM software, making it ready for installation and saving you a trip to the dealer for expensive flashing services.
Will this fix my check engine light?
If the check engine light and performance issues are caused by a faulty internal computer, then this 2004 Suburban 1500 PCM is the correct solution. It’s crucial to have your vehicle properly diagnosed to ensure the PCM is the root cause of the problem before ordering.