Is Your GM Truck, Van, or SUV Sidelined by a Faulty Engine Computer?
A failing Powertrain Control Module (PCM) can bring your vehicle to a dead stop, causing immense frustration and disrupting your daily life. Whether it’s your workhorse Suburban 2500 that won’t start, your Express van running rough, or a check engine light that won’t go away, a bad PCM is often the culprit. This isn’t just an inconvenience; it’s a critical failure that needs a reliable solution. We provide the definitive answer: a professionally programmed engine computer, matched specifically to your vehicle’s VIN, that gets you back on the road with confidence.
Common Symptoms of a Failing PCM & Your Solution
If you’re experiencing any of the following issues, a faulty PCM is a likely cause. This unit is the direct solution for these problems:
- Complete No-Start Condition: The engine cranks but will not fire up.
- Check Engine Light (CEL): Persistent illumination with communication-related Diagnostic Trouble Codes (DTCs) like P0601, P0602, P0606, or other internal controller errors.
- Erratic Engine Performance: Stalling, rough idling, misfiring, or poor fuel economy without any other apparent cause.
- Transmission Issues: Harsh or incorrect shifting, as the PCM also controls transmission functions in many GM vehicles.
- Loss of Communication: Your scan tool cannot communicate with the engine computer.
Don’t let a bad module keep you guessing. This Programmed 12586243 PCM is your direct-fit, plug-and-play solution to restore your vehicle’s factory performance and reliability.
Features & Benefits
- ✔ VIN-Specific Programming: We flash the module with the latest GM-approved software using your vehicle’s unique VIN. This ensures perfect compatibility and performance right out of the box.
- ✔ Eliminate Dealer Hassles: This unit arrives ready for installation, saving you a costly trip to the dealership for programming. Just install the part and perform the security relearn procedure.
- ✔ Restored Drivability: By replacing your faulty computer, you’ll solve persistent running issues, restore smooth operation, and ensure your engine is functioning as the manufacturer intended.
- ✔ Guaranteed Fitment: This module is a direct replacement for OEM part numbers 12586243 and 89017739, ensuring a perfect physical fit and proper electronic communication.
- ✔ This unit is backed by our one-year replacement warranty.
An Expert’s Note on VIN Programming
As a technician with over two decades of experience, I’ve seen countless vehicle owners waste time and money on used, unprogrammed modules from a salvage yard. A PCM isn’t like an alternator; it’s the brain of your vehicle, containing security information and specific operational data. Our VIN programming service is the most critical step. We ensure the module you receive is not just a compatible part, but the correct part for your exact vehicle configuration. This is the difference between a quick, successful repair and a frustrating, expensive dead-end.
Frequently Asked Questions
What do I need to do after I place my order?
After you complete your purchase, you must provide us with your vehicle’s 17-digit VIN (Vehicle Identification Number). We cannot program and ship your Programmed 12586243 PCM until we receive this information.
Is this module truly plug-and-play?
Yes, it comes programmed to your VIN. However, on most 2004 GM vehicles, you will need to perform a simple security relearn procedure after installation. This procedure, often called the “Passlock Relearn,” can typically be done without special tools and takes about 30 minutes. It syncs the new PCM with your vehicle’s anti-theft system.
How do I find my vehicle’s VIN?
Your VIN can be found on a metal tag 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 fix my check engine light?
If the check engine light and performance issues are caused by a failed PCM (e.g., internal processor codes), this part is the correct fix. However, it’s essential to ensure your vehicle has been properly diagnosed, as other faulty sensors or wiring issues can cause similar symptoms.
My original part number is 89017739. Will this work?
Yes, this module is the correct, updated replacement for part number 89017739 and is fully compatible.
Is this the right computer for my 2004 Suburban 2500 with the 8.1L engine?
Yes, according to the fitment data, this is the correct Electronic Control Module for the 2004 Suburban 2500 with the 8.1L gasoline engine. We will confirm perfect compatibility when you provide your VIN for programming.