Restore Peak Performance to Your GM Truck or SUV
Is your 2004 Chevrolet Suburban 2500 suffering from erratic behavior, a persistent check engine light, or a no-start condition? These are common indicators of a failing Powertrain Control Module (PCM), the central computer responsible for managing your engine’s performance, fuel economy, and emissions. This replacement PCM, service number 12586242, is the definitive solution to get your vehicle running reliably again. It arrives at your door pre-programmed with the latest GM software updates, tailored specifically to your vehicle’s VIN.
Expert Pro Tip
Before replacing your PCM, always verify that your battery is fully charged and that all battery terminals and primary ground connections are clean and tight. A poor ground or low voltage can mimic PCM failure symptoms, leading to an unnecessary and costly misdiagnosis. A simple check can save you time and money.
Is This the Right Part for Your 2004 Suburban 2500 PCM?
This module is a direct-fit replacement for a wide range of 2004 GM vehicles. It is crucial to match your original part’s service number to ensure compatibility. This unit replaces service numbers including 12586242, 19299226, 89017738, YFKD, YFKF, YFKH, YFKJ, YFKX, YFXL, YFXM, YFXN, YFXP, and YHTN. By providing your Vehicle Identification Number (VIN) upon purchase, we guarantee the module is flashed with the correct calibration files for your specific engine, transmission, and emissions equipment, making installation straightforward.
Common Symptoms of a Failing PCM
- ✔ Persistent Check Engine Light (CEL) illuminated on your dash.
- ✔ Engine stalling, stumbling, or hesitating during acceleration.
- ✔ Rough or inconsistent idling.
- ✔ Noticeable decrease in fuel efficiency.
- ✔ Failure to pass state emissions testing.
- ✔ Intermittent or complete no-start condition where the engine cranks but won’t fire.
- ✔ Harsh or incorrect automatic transmission shifting.
Plug-and-Play Installation Process
Our goal is to simplify your repair. Because we program the module to your VIN before shipping, you can avoid a trip to the dealership for expensive flashing services. In most cases, the installation is a simple plug-and-play process. While many vehicles will not require any additional procedures, some may need a security relearn or crankshaft position sensor relearn, which can often be performed without specialized tools. This pre-programmed 2004 Suburban 2500 PCM is the most efficient way to solve complex electronic issues and restore your vehicle’s factory performance and reliability.
Frequently Asked Questions
Do I need to have this PCM programmed?
No. We handle all the programming for you before the part is shipped. Simply provide us with your vehicle’s VIN during or after checkout, and we will flash the module with the latest GM software specific to your truck. It will arrive ready for installation.
Where is the PCM located on my 2004 Suburban 2500?
On most 2004 GM full-size trucks and SUVs like the Suburban, Silverado, and Sierra, the PCM is located in the engine compartment on the driver’s side, under the battery tray. You will need to remove the battery to access it.
Will this fix my check engine light?
If the check engine light is caused by an internal failure of the PCM, then yes, this part will resolve the issue. However, it is essential to properly diagnose the fault codes. The light could be on for other reasons, such as a faulty sensor or wiring issue, which a new PCM will not fix.
Is any additional setup required after installation?
In many cases, the module is plug-and-play. However, some GM vehicles of this era may require a security relearn procedure (often called a VATS relearn) to allow the vehicle to start. This procedure can typically be done without special tools and instructions can be readily found online.
How do I provide my VIN?
You can add your VIN in the notes section at checkout or send it to us in a message after you complete your purchase. We cannot program and ship your part without the correct VIN.