Restore Peak Performance to Your GM Truck or SUV
Is your GMC Yukon, Chevy Silverado, or Cadillac Escalade running rough, throwing check engine codes, or refusing to start? A faulty Powertrain Control Module (PCM) is often the culprit behind these frustrating and complex issues. This direct-fit replacement PCM, part number 12589463, is the reliable solution to get your vehicle back on the road. It serves as the central brain for your engine and transmission, and when it fails, it can cause a cascade of problems that are difficult to diagnose. We take the guesswork out of the repair by providing a module that is professionally programmed with the latest GM software updates, specifically matched to your vehicle’s unique Vehicle Identification Number (VIN).
From the Diagnostic Bay
We had a 2005 Sierra 1500 come into the shop with a persistent P0300 random misfire code. The owner had already replaced all the spark plugs, wires, and even a coil pack with no success. The engine idled poorly and lacked power under acceleration. After hooking up our diagnostic scanner and seeing erratic fuel trim and timing data, we suspected the PCM. Instead of continuing to replace perfectly good parts, we swapped in a VIN-programmed module. After a quick CASE relearn procedure, the truck fired up and ran perfectly smooth. It’s a classic case of symptoms pointing to multiple parts, but the root cause being the central computer itself.
Common Symptoms of a Failing PCM
- ✔ Persistent Check Engine Light (CEL) with various trouble codes.
- ✔ Engine stalling, stumbling, or hesitating during acceleration.
- ✔ Noticeable decrease in fuel economy.
- ✔ Harsh or erratic automatic transmission shifting.
- ✔ Complete no-start condition where the engine cranks but won’t fire.
- ✔ Communication errors with diagnostic scan tools.
- ✔ Misfire codes that don’t resolve after replacing ignition components.
The Simple, Reliable Solution: A Pre-Programmed 2003-2006 Yukon PCM
Don’t waste time and money at a dealership for expensive programming. Our service simplifies the entire process. When you order this module, you provide us with your vehicle’s VIN. Our technicians then flash the unit with the correct, factory-authorized software for your specific make, model, engine, and transmission combination. This ensures that once installed, the PCM will function exactly as the original did when it was new. This unit is a direct replacement for multiple service numbers, including 89017750, 12582605, 12589463, 12602802, 89017734, and 28042802, making it a versatile solution for a wide range of GM vehicles from 2003 to 2007.
Installation is straightforward for any experienced DIYer or professional mechanic. Simply disconnect the battery, locate and unplug the old module (typically found under the hood near the battery or airbox), and install the new one. After installation, a simple security or CASE (Crankshaft Angle Sensor Error) relearn procedure may be required, which can often be done without specialized tools. This final step syncs the new computer to your engine, ensuring accurate performance and clearing any related security codes.
Frequently Asked Questions
Do I need to program this PCM?
No. This PCM arrives at your door fully programmed to your vehicle’s VIN. Simply provide your VIN at checkout, and we handle all the flashing with the latest GM software before it ships.
What is a CASE relearn, and will I need to perform one?
A CASE (Crankshaft Angle Sensor Error) relearn procedure synchronizes the new PCM with your engine’s crankshaft position sensor. Most GM vehicles of this era require this step after a PCM replacement. It is a simple procedure that can often be done with a capable scan tool or by following a specific drive cycle.
Where is the PCM located on my truck or SUV?
On most compatible models like the Yukon, Tahoe, Silverado, and Sierra, the PCM is located in the engine bay on the driver’s side, typically under or next to the battery tray or attached to the air filter housing.
How do I find my vehicle’s VIN?
Your 17-digit VIN can be found 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.
Is this part compatible with my vehicle?
This module fits a wide range of GM trucks and SUVs from roughly 2003-2007. Please review the detailed fitment list on this page and ensure your original part number is listed as a compatible service number to guarantee a perfect match.