Get Your GM Truck Back in Action
Is your Silverado, Sierra, or Express van running rough, shifting poorly, or refusing to start? A faulty Powertrain Control Module (PCM) is often the hidden culprit behind these frustrating and costly issues. Don’t let a failing engine computer keep your vehicle sidelined. This direct-fit Powertrain Control Module is the reliable, straightforward solution to restore your vehicle’s performance and get you back on the road with confidence.
We take the guesswork and expense out of the equation. Before this module ever leaves our facility, we program it specifically to your vehicle using your VIN. This ensures it has the latest GM software updates for optimal engine and transmission function, fuel economy, and emissions performance. You get a part that’s ready for installation, saving you a trip to the dealership for expensive programming services.
Common Symptoms & Your Direct-Fit Solution
If you’re experiencing any of the following, a failing PCM could be the cause. This module is designed to be the definitive fix for:
- Persistent Check Engine Light (CEL)
- Diagnostic Trouble Codes (DTCs) like P0601, P0602, P0606
- Rough or erratic engine idle
- Poor acceleration and loss of power
- Reduced fuel economy
- Harsh or incorrect transmission shifting
- Complete no-start or intermittent stalling conditions
By installing our expertly prepared and programmed 12589462 PCM, you’re not just replacing a part; you’re restoring the central nervous system of your vehicle’s powertrain.
Features & Benefits
- ✔ VIN-Specific Programming: Arrives flashed with the latest GM software for your exact vehicle. No dealer visit required for programming.
- ✔ Restored Drivability: Solves common issues like rough idling, poor shifting, and hesitation to bring back smooth, reliable operation.
- ✔ Direct-Fit Replacement: Engineered to be a perfect match for the original module, ensuring a straightforward installation process.
- ✔ Cost-Effective Solution: Avoid the high costs of dealership diagnostics and programming with a part that’s ready to go right out of the box.
- ✔ Peace of Mind: This unit is backed by our one-year replacement warranty.
An Expert’s Note on Diagnostics
“We’ve seen it countless times. A customer comes in after replacing sensors, plugs, and coils, still battling a persistent misfire or shifting problem. They’ve spent hundreds, if not thousands, chasing ghosts. In many of these mid-2000s GM trucks, the root cause is a failing PCM that’s sending incorrect signals. A properly programmed 12589462 PCM isn’t just a component; it’s the solution that saves you from throwing more money at the wrong parts. It gets the job done right the first time.”
Frequently Asked Questions
Is this part truly ‘plug and play’?
This module is fully programmed to your VIN before shipping, which handles the most critical step. However, on most GM vehicles, you may need to perform a security relearn procedure (also known as a CASE relearn) after installation. This is a simple process that can typically be done without special tools and instructions can be easily found online for your specific model.
How do I provide you with my VIN?
After you complete your purchase, you will receive instructions on how to send us your vehicle’s 17-digit VIN. We cannot ship your part until we receive and validate your VIN, as the programming is essential for the module to function in your vehicle.
My original part number is 12602801. Will this work?
Yes. This module is a direct, compatible replacement for several part numbers, including 12589462, 12602801, and 89017749. As long as your vehicle is on the compatibility list, this part will function correctly once programmed to your VIN.
Will this fix my check engine light?
If the check engine light and associated symptoms are caused by a faulty PCM, this part is the correct solution. However, we always recommend that a proper diagnosis is performed to confirm the PCM is the point of failure before ordering. This programmed 12589462 PCM is designed to resolve internal module faults.
What is the warranty on this module?
This unit is backed by our one-year replacement warranty, giving you confidence in your repair.