Get Your Truck Running Right Again
Is your 2004 GM truck or SUV suffering from frustrating issues like a persistent check engine light, poor fuel economy, erratic shifting, or even a no-start condition? A faulty Engine Control Module (ECM) is often the culprit behind these problems, leaving you with an unreliable vehicle. This replacement Powertrain Control Module, service number 12586242, is the definitive solution to restore your vehicle’s performance and your peace of mind. It arrives at your door fully programmed with the latest GM software updates, specifically matched to your vehicle using your VIN. This eliminates the need for an expensive trip to the dealership for programming.
Common Symptoms & Your Direct-Fit Solution
If you’re experiencing any of the following, a failing computer is the likely cause. This unit is designed to resolve these issues:
- Check Engine Light (CEL) with communication-related codes (e.g., P0601, P0606)
- Poor or erratic automatic transmission shifting
- Engine stalling, sputtering, or misfiring
- Complete no-start condition where the engine cranks but won’t fire
- Noticeable decrease in fuel efficiency
- Apparent loss of engine power
Installing our Programmed 12586242 ECM is the most effective way to correct these electronic failures and get your truck back to factory-spec performance. We handle the complex programming so you can handle the straightforward installation.
Features & Benefits
- ✔ Plug-and-Play Installation: Arrives pre-flashed to your vehicle’s specific VIN. No dealership programming required.
- ✔ Optimized Performance: Loaded with the latest GM software updates to improve drivability, fuel economy, and emissions performance.
- ✔ Guaranteed Compatibility: A direct replacement for service numbers 12586242, 19299226, 89017738, and others listed in the fitment guide.
- ✔ Cost-Effective Solution: Get a fully functional, programmed module at a fraction of the cost of a new unit from the dealer.
- ✔ This unit is backed by our one-year replacement warranty.
Expert Insight: We recently helped a contractor whose 2004 Silverado 2500 was constantly stalling at job sites. He had already replaced the fuel pump and spark plugs with no luck. The issue was a failing computer that wasn’t properly controlling fuel delivery under load. After installing our Programmed 12586242 ECM, his truck was back to being the reliable workhorse he depends on. Don’t waste time and money chasing mechanical parts when the electronic brain is the real problem.
Frequently Asked Questions
Do I need to do any programming myself?
No. We program the module to the VIN you provide before shipping. It is ready for installation right out of the box. In most cases, you will only need to perform a simple security relearn procedure, which can be done without any special tools and takes about 30 minutes.
How do I provide my vehicle’s VIN?
After you complete your purchase, you will need to send us your 17-digit Vehicle Identification Number (VIN). We will provide clear instructions on how to do this. We cannot ship your part until we have this information.
What if my original part number is different from 12586242?
This module is a direct replacement for several service numbers, including 19299226, 89017738, YFKD, YFKF, YFKH, and more. As long as your vehicle is on the compatibility list and your original module has one of the listed service numbers, this part will work perfectly.
What is a security relearn procedure?
This is a simple process that syncs the new ECM with your vehicle’s anti-theft system. It typically involves turning the key to the ‘ON’ position for 10-15 minutes, then ‘OFF’, and repeating this sequence three times. We include instructions to guide you through it.
Is this a guaranteed fix for my vehicle?
This Programmed 12586242 ECM will fix any issues directly caused by a faulty computer. However, we always recommend having a qualified mechanic diagnose your vehicle to confirm the ECM is the point of failure before ordering, as other sensors or wiring issues can cause similar symptoms.
