Is your 2004 Chevy S10 or GMC Sonoma running rough, stalling, or showing a persistent Check Engine Light?
A failing Powertrain Control Module (PCM) can be the hidden cause of countless frustrating issues, turning your reliable truck into a source of constant headaches. Don’t let a faulty computer keep you off the road. This replacement Engine Control Module is the definitive solution to restore your vehicle’s performance, reliability, and drivability. We program this unit specifically to your vehicle’s VIN before it ships, ensuring a straightforward installation process.
Common Symptoms & Your Solution
If you’re experiencing any of the following, a failing PCM is the likely culprit:
- Persistent Check Engine Light (CEL) with codes like P0601, P0602, or P0606
- Vehicle won’t start or stalls intermittently
- Poor fuel economy and engine performance
- Harsh or erratic automatic transmission shifting
- Communication errors with diagnostic scan tools
- Apparent failure of multiple sensors at once
This pre-programmed 2004 S10 PCM 12586243 is the reliable fix for these complex electronic issues, restoring the critical link between your truck’s engine and transmission for smooth, efficient operation.
Features & Benefits
- ✔ VIN-Programmed for Your Truck: Arrives flashed with the latest GM software updates for your specific vehicle, eliminating the need for an expensive trip to the dealership.
- ✔ Restored Performance: Corrects engine misfires, poor idling, and hesitation, bringing back the power and responsiveness you expect.
- ✔ Improved Fuel Efficiency: By restoring precise fuel and timing control, a new PCM can help you get the most out of every gallon.
- ✔ Direct-Fit Replacement: Designed to be a perfect match for the original module (interchangeable with part number 89017739) for a hassle-free installation.
- ✔ Problem-Solving Power: Solves mysterious electronic gremlins that can be difficult and costly to diagnose.
- ✔ This unit is backed by our one-year replacement warranty.
An Expert’s Note on Installation
Many people assume you can just swap a computer from another truck. On modern vehicles like your S10, that’s not the case. The PCM is tied directly to the anti-theft system (VATS/Passlock) and has specific calibrations for your engine, transmission, and even tire size. Our VIN programming service handles all of this for you. While the unit is plug-and-play, some GM vehicles may require a simple, 10-minute security relearn procedure that you can do yourself with just the key. We provide clear instructions to make the process as simple as possible.
Stop guessing and replace your faulty computer with confidence. This is the correct part to get your truck running properly again. By purchasing this 2004 S10 PCM 12586243, you’re not just buying a part; you’re investing in peace of mind and the renewed reliability of your vehicle.
Frequently Asked Questions
What do I need to do after I place my order?
After you complete your purchase, you must send us your vehicle’s 17-digit VIN (Vehicle Identification Number). We cannot program and ship your module without it. You can typically reply to your order confirmation email with the VIN.
Is any additional programming required once I install it?
No dealership programming is needed. The module arrives ready to install. However, on some GM models, you may need to perform a simple security relearn procedure, which involves turning the key on and off in a specific sequence. We include instructions for this easy process.
My original part number is 89017739. Will this work?
Yes, this PCM, part number 12586243, is a fully compatible and interchangeable replacement for part number 89017739. As long as your vehicle is on the fitment list, this module will work correctly once programmed to your VIN.
Where can I find my vehicle’s VIN?
Your VIN can be found on a metal plate on the driver’s side of the dashboard (visible through the windshield), on the driver’s side door jamb sticker, or on your vehicle’s registration and insurance documents.
Will this computer fix my transmission shifting problems?
In many cases, yes. The PCM (also known as the ECM) controls both the engine and the transmission. Erratic shifting, getting stuck in a gear, or harsh engagement are common symptoms of a failing module. However, it is always best to have a qualified mechanic properly diagnose the issue, as mechanical transmission problems can present similar symptoms.