Get Your Truck Back on the Road, Fast.
Is your 2004 GM truck or SUV giving you headaches? A faulty Powertrain Control Module (PCM) can bring your workhorse to a dead stop, causing frustrating issues like stalling, erratic shifting, a persistent check engine light, or a complete no-start condition. Don’t let a bad computer dictate your schedule. This pre-programmed Engine Control Module, service number 12586242, is the definitive, reliable solution to restore your vehicle’s performance and get you back to work and life without delay.
Common Symptoms & Your Solution
If you’re experiencing any of the following, a failing PCM is the likely culprit. This unit is designed to solve these exact problems:
- Engine stalling or cutting out unexpectedly
- Rough or inconsistent idling
- Poor fuel economy
- Failure to pass emissions tests
- Transmission shifting problems (harsh shifts, not shifting)
- Check Engine Light (CEL) with communication error codes
- Complete no-start condition where the engine cranks but won’t fire
Instead of paying steep dealership prices and waiting for an appointment, we provide a direct, ready-to-install solution. We use your vehicle’s VIN to flash this 2004 Silverado 3500 Engine Computer with the latest, most stable software updates directly from GM. This ensures perfect compatibility and optimal performance right out of the box.
Features & Benefits
- ✔ VIN-Programmed for Your Vehicle: No need for expensive dealer programming. Just provide your VIN at checkout, and we handle the rest, ensuring a plug-and-play installation.
- ✔ Loaded with Latest GM Updates: Your computer arrives with the most current software, correcting factory bugs and optimizing engine and transmission performance.
- ✔ Direct-Fit Replacement: Guaranteed to be the correct replacement for service numbers 12586242, 19299226, 89017738, and many more, ensuring perfect fit and function.
- ✔ Restores Peak Performance: Eliminates engine hesitation, rough idle, and poor shifting, bringing back the smooth, reliable power you depend on.
- ✔ Cost-Effective Solution: Get the quality and programming of a dealership without the excessive cost or hassle.
- ✔ This unit is backed by our one-year replacement warranty.
Expert Insight: Back to the Job Site by Monday
We recently worked with a contractor whose 2004 Silverado 3500 wouldn’t start, leaving his crew and equipment stranded. The dealership quoted him over a thousand dollars and a week-long wait. He ordered this exact 2004 Silverado 3500 Engine Computer from us on a Thursday. It arrived Saturday, he installed it in under an hour, performed the simple security relearn, and the truck fired right up. He was back on the job site Monday morning, having saved time, money, and a major headache. That’s the peace of mind we deliver.
This module is the brain of your vehicle, controlling everything from fuel mixture and ignition timing to transmission shifting. When it fails, nothing works right. By choosing our pre-programmed 2004 Silverado 3500 Engine Computer, you’re not just buying a part; you’re buying a reliable, long-term fix that restores your vehicle’s dependability. Simply provide your VIN, and we’ll ship you the precise, updated module your truck needs.
Frequently Asked Questions
Do I need to do any programming after I receive it?
No! We program the computer to your vehicle’s VIN before shipping. It arrives ready to install. However, on most GM vehicles of this era, you will need to perform a simple security relearn procedure (often called a CASE relearn or anti-theft relearn) which takes 10-30 minutes and requires only your key. Instructions are readily available online for this process.
How do I provide my VIN?
After you complete your purchase, you will need to send us a message with your vehicle’s 17-digit VIN. We cannot ship your part until we receive this information, as the programming is specific to your truck.
Is it essential to match the service number?
Yes, matching your original service number to one in our list (e.g., 12586242, YFKD, YFXL) is crucial for guaranteeing compatibility. This ensures the hardware is correct for your vehicle’s options. The VIN programming then tailors the software perfectly.
What if I have an Isuzu Ascender or Hummer H2?
This computer is also the correct part for several other 2004 GM-platform vehicles, including the Isuzu Ascender (5.3L) and Hummer H2. As long as your vehicle is on the compatibility list and your service number matches, this unit will work perfectly once programmed to your VIN.
Is there a core charge?
There is no core charge for this part. You do not need to send your old computer back to us.