Restore Peak Performance to Your 2004 GM Truck or SUV
Is your 2004 Silverado, Sierra, Tahoe, or another GM vehicle suffering from frustrating issues like a persistent check engine light, rough idling, poor fuel economy, or even a no-start condition? These are classic signs of a failing Powertrain Control Module (PCM), the electronic brain of your vehicle. Don’t let a faulty computer keep you off the road. This replacement PCM, service number 12586242, is the reliable, plug-and-play solution you need to get your truck running like new again.
From the Diagnostic Bay
A customer brought in their ’04 Sierra Denali with a complaint of intermittent stalling and a check engine light that multiple shops couldn’t solve. They’d replaced sensors and plugs, but the problem persisted. After hooking up our scanner, we saw erratic data from the PCM. Instead of a costly dealer visit, we sourced a VIN-programmed module just like this one. After a straightforward installation and a quick security relearn, the truck ran perfectly. The customer was thrilled to have their reliable truck back without the dealership price tag. This highlights the importance of getting a correctly programmed module for a lasting fix.
Common Symptoms of a Failing PCM
- ✔ Persistent Check Engine Light (CEL) with various trouble codes.
- ✔ Engine stalling or cutting out unexpectedly.
- ✔ Rough or erratic idling.
- ✔ Noticeable decrease in fuel efficiency.
- ✔ Harsh or incorrect transmission shifting.
- ✔ Misfire codes even after replacing plugs and coils.
- ✔ Complete no-start condition where the engine cranks but won’t fire.
The Right Solution for Your 2004 Silverado 1500 PCM
This isn’t just a generic, off-the-shelf part. We take the guesswork out of the repair by programming this module specifically for your vehicle using your VIN. This process ensures that the computer has the latest GM software updates and communicates perfectly with your truck’s engine, transmission, and other systems. It’s a direct replacement for service number 12586242 and a host of other compatible numbers, guaranteeing a perfect fit and function.
Simple, VIN-Programmed Process
Our goal is to make your repair as simple as possible. After you complete your purchase, simply provide us with your vehicle’s 17-digit VIN. Our technicians will then flash the module with the correct software for your exact configuration. We handle the complex part so you can focus on the installation. Once installed, you may need to perform a simple security relearn procedure (often called a CASE relearn), which can typically be done without special tools.
Guaranteed Fitment
This Electronic Control Module is a direct replacement for vehicles equipped with service numbers 12586242, 19299226, 89017738, YFKD, YFKF, YFKH, YFKJ, YFKX, YFXL, YFXM, YFXN, YFXP, or YHTN. It is compatible with a wide range of 2004 GM models, including:
- Chevrolet Silverado 1500, 2500, 3500
- Chevrolet Suburban 1500, 2500
- Chevrolet Tahoe & Avalanche 1500
- Chevrolet SSR & Trailblazer EXT
- GMC Sierra 1500, 2500, 3500 & Denali
- GMC Yukon & Yukon XL
- GMC Envoy XL & XUV
- Cadillac Escalade, ESV, EXT
- Buick Rainier
- Hummer H2
- Isuzu Ascender
Restore the reliability and drivability of your vehicle with a quality, pre-programmed 2004 Silverado 1500 PCM. Order today to get back on the road with confidence.
Frequently Asked Questions
What does the PCM do in my truck?
The Powertrain Control Module (PCM) is the central computer that manages your vehicle’s engine and transmission. It controls critical functions like fuel injection, ignition timing, and transmission shift points to ensure optimal performance, fuel economy, and emissions.
Is this module ready to install when it arrives?
Yes, it comes pre-programmed to your vehicle’s VIN with the latest GM software. In most cases, it is a plug-and-play installation, though some vehicles may require a simple security relearn procedure, which can be done without a scanner. Instructions are readily available online for this process.
Where do I find my vehicle’s VIN?
Your 17-digit Vehicle Identification Number (VIN) can be found on your vehicle’s registration, insurance card, or on the driver’s side of the dashboard visible through the windshield.
How do I know if my PCM is actually the problem?
While the symptoms listed are strong indicators of PCM failure, it’s always best to have a proper diagnosis performed. However, if you’ve eliminated other potential causes like sensors, wiring, or fuel delivery issues, a faulty PCM is the likely culprit. This part is a direct replacement for a diagnosed bad module.
Will this work for my 6.0L Sierra 2500?
Yes, this module fits a wide range of GM trucks and SUVs from 2004 with various engines, including the 5.3L and 6.0L V8s. As long as your original module has one of the listed service numbers (like 12586242), this unit will be a compatible replacement once programmed to your VIN.