Get Your Truck Back on the Road, Fast.
Is your Yukon, Silverado, or Savana van running rough, stalling unexpectedly, or refusing to start? A faulty Powertrain Control Module (PCM) is often the culprit behind these frustrating and costly issues. Don’t let a complex computer problem keep your vehicle sidelined. This is the straightforward, reliable solution to restore your engine’s performance and your peace of mind. We provide a professionally programmed PCM, flashed with the latest official GM software updates specifically for your vehicle’s VIN, making installation as simple as possible.
Common Symptoms & Your Solution
If you’re experiencing any of the following, a failing PCM is a likely cause. This module is the definitive fix for:
- Persistent Check Engine Light (CEL)
- Diagnostic Trouble Codes (DTCs) related to the processor, such as P0601, P0604, or P0606
- Erratic or harsh transmission shifting
- Sudden engine stalling or stumbling
- Complete no-start condition with power to all other systems
- Poor fuel economy and reduced engine power
- Communication errors with diagnostic scan tools
By replacing your old unit with this professionally programmed 12589462 PCM, you are directly addressing the root cause, not just masking symptoms. It’s the key to getting your dependable GM vehicle back to factory-spec operation.
Features & Benefits
- ✔ VIN-Programmed for Your Vehicle: Arrives ready to install, flashed with the latest GM calibrations for your specific vehicle. This critical step eliminates the need for an expensive trip to the dealership for programming.
- ✔ Plug & Play Design: Once installed, you may only need to perform a simple security relearn procedure (instructions available online), getting you back on the road in minimal time.
- ✔ Restored Drivability: Corrects common issues like poor idle, hesitation, and improper shifting by restoring the brain of your engine and transmission management system.
- ✔ Direct-Fit OEM Replacement: Engineered to be a direct replacement for part numbers 12589462, 12602801, and 89017749, ensuring a perfect fit and proper connection.
- ✔ One-Year Replacement Protection: This unit is backed by our one-year replacement warranty.
An Expert’s Insight from 20+ Years on the Job
I’ve seen countless trucks and vans come into the shop with bizarre, hard-to-diagnose electronic issues. More often than not, it traces back to the PCM. One of the biggest advantages of this particular solution is the fresh programming with the latest GM software. Over the years, GM releases updates that fix small bugs and improve engine or transmission logic—things the original software might have struggled with. So, you’re not just replacing a failed part; you’re installing a component that often performs better and more reliably than the original did when it was new. It’s the right way to do the job.
Frequently Asked Questions
What exactly does a PCM do?
The Powertrain Control Module (PCM) is the central computer of your vehicle. It controls all aspects of engine and transmission function, including fuel injection, ignition timing, emissions systems, and shift points, to ensure optimal performance, efficiency, and reliability.
Is this part truly ‘plug and play’?
Because this programmed 12589462 PCM is flashed to your VIN, it eliminates the most difficult programming steps. On many GM vehicles, you may need to perform a simple security relearn procedure, also known as a ‘key relearn,’ which can typically be done in your driveway in about 30 minutes without special tools. A Crankshaft Variation Relearn (CASE) may also be needed with a capable scan tool for optimal performance.
How do I provide my VIN?
After you complete your purchase, simply send us a message with your 17-digit Vehicle Identification Number (VIN). We cannot ship your part until we receive this information, as the programming is specific to your vehicle.
Where is the PCM located on my truck or van?
On most GM trucks and large SUVs from this era (like the Silverado, Sierra, and Yukon), the PCM is located in the engine bay on the driver’s side, typically under or near the battery. On Express and Savana vans, it’s usually found in the rear of the engine compartment on the driver’s side.
What if this doesn’t fix my problem?
While this programmed 12589462 PCM is a definitive solution for a failed computer, proper vehicle diagnostics are essential. If your issues persist after installation, the problem may lie with other components like sensors, wiring, or fuel system parts. We recommend a thorough diagnosis by a qualified technician if you are unsure.
Does this module have a warranty?
Yes, it does. This unit is backed by our one-year replacement warranty, giving you confidence in your repair.