Get Your Truck or Van Back in Action
Is your GM vehicle suffering from strange, unpredictable behavior? A faulty Powertrain Control Module (PCM) can be the hidden cause of everything from a persistent check engine light and poor fuel economy to rough shifting and even a no-start condition. Stop chasing symptoms and replace the core of the problem. This replacement engine computer, programmed specifically for your vehicle, is the definitive solution to restore the performance and reliability you depend on. Whether you’re hauling equipment to a job site or carrying your family, this is the fix that provides true peace of mind. We make it simple: provide your VIN, and we’ll ship a module that’s ready to install right out of the box, featuring the latest GM software updates for your specific model.
Common Symptoms & Your Solution
If you’re experiencing any of the following, a failing engine computer is the likely culprit. This professionally programmed 12589462 PCM is designed to permanently resolve these issues:
- Erratic or harsh transmission shifting
- Unexplained drop in fuel mileage
- Engine stalling, stumbling, or misfiring
- Failure to start or intermittent starting problems
- Check Engine Light with communication error codes (like P0601, P0605, P0606)
- Inaccurate or non-functioning dashboard gauges
Features & Real-World Benefits
- ✔ Pre-Programmed to Your VIN: No expensive trips to the dealer or locksmith. This module arrives ready for installation, saving you critical time and hundreds of dollars in programming fees.
- ✔ Loaded with the Latest GM Software: We flash your module with the newest factory updates to ensure optimal engine performance, transmission function, fuel efficiency, and emissions control.
- ✔ Direct Replacement Fit: This unit is a perfect substitute for part numbers 12589462, 12602801, and 89017749, guaranteeing a perfect physical and electronic fit for the extensive list of compatible vehicles.
- ✔ Solves Complex Drivability Issues: Put an end to frustrating problems like rough idling, erratic shifting, and persistent check engine lights caused by a failing ECU. This is the core fix, not a temporary patch.
- ✔ Peace of Mind Included: This unit is backed by our one-year replacement warranty.
An Expert’s Insight: Why VIN-Specific Programming is Non-Negotiable
Think of your vehicle as a team of specialists that all report to a manager—that manager is the PCM. A generic, unprogrammed module is like a manager who doesn’t speak the same language as the team. Your vehicle’s VIN isn’t just a serial number; it’s a blueprint containing critical data about its specific options: the engine, transmission type, axle ratio, security system (VATS/Passlock), and even tire size. Our VIN-specific programming ensures your new 12589462 PCM communicates flawlessly with every other module on your vehicle. This critical step prevents a host of new problems and guarantees your truck, van, or SUV operates exactly as the engineers at GM intended.
Frequently Asked Questions
Do I need to do any programming myself?
Absolutely not. This module is a true plug-and-play solution. We handle all the programming using your vehicle’s VIN before we ship it. All you need to do is install it.
How do I provide my Vehicle Identification Number (VIN)?
After you complete your purchase, you will need to send us your 17-digit VIN. We will provide clear instructions on how to submit this information to ensure your 12589462 PCM is programmed correctly.
Will this fix my check engine light?
If the check engine light is caused by an internal failure of the existing PCM (common codes include P0601 through P0606), this replacement unit is the correct fix. It’s always best to have your vehicle properly diagnosed to confirm the PCM is the point of failure.
What is the warranty on this module?
This unit is backed by our one-year replacement warranty. This gives you confidence in the quality and reliability of your purchase.
Is this compatible with my vehicle?
This module fits a wide range of GM models from approximately 2004 to 2007. Please review the detailed compatibility list on this page carefully to confirm it matches your specific make, model, and engine size.
What if my original part number is different?
This module is a direct replacement for several part numbers, including 12589462, 12602801, and 89017749. If your original module has one of these numbers, this unit will work perfectly.