Restore Peak Performance to Your GM Truck or SUV
Is your Yukon, Silverado, or Express van running rough, throwing confusing check engine codes, or refusing to start? A faulty Powertrain Control Module (PCM) is often the culprit, leading to frustrating downtime and diagnostic headaches. This direct-fit replacement engine computer is the definitive solution to get your vehicle back on the road quickly and reliably. It arrives fully programmed to your specific Vehicle Identification Number (VIN), eliminating the need for an expensive trip to the dealership for programming.
Common Symptoms & Your Solution
If you’re experiencing issues like a persistent Check Engine Light (CEL), erratic shifting, poor fuel economy, or a complete no-start condition, your PCM may be failing. This is especially common with Diagnostic Trouble Codes (DTCs) such as P0601, P0602, P0606, or U-series communication codes. This pre-programmed module is engineered to resolve these critical issues, acting as the brain of your vehicle’s engine and transmission. By installing this correctly flashed 2005-2006 Yukon XL 2500 PCM, you are restoring the vital communication link between your vehicle’s systems.
Features & Tangible Benefits
- ✔ VIN-Specific Programming Included: We flash the module with the latest GM software updates using your vehicle’s VIN. This ensures a true plug-and-play installation, saving you time and money.
- ✔ Restored Drivability: Eliminates common failure symptoms like rough idling, stalling, and poor engine performance for a smoother, more reliable ride.
- ✔ Optimized Efficiency: With the correct software, your engine and transmission operate exactly as the manufacturer intended, restoring proper fuel economy and emissions control.
- ✔ Guaranteed Compatibility: This unit is a direct replacement for part numbers 12589462, 12602801, and 89017749, ensuring a perfect fit and function for the extensive list of compatible GM vehicles.
- ✔ Purchase with Confidence: This unit is backed by our one-year replacement warranty.
Expert Insight: The Technician’s Pro-Tip
Before replacing your PCM, always perform a full battery and charging system test. A weak battery or poor ground connections (especially the main engine-to-chassis ground) can cause voltage drops that mimic PCM failure. Verifying these basics can save you from replacing a part that isn’t faulty. A solid electrical foundation is critical for the health of any new engine computer.
Installation & Next Steps
After purchasing, simply provide us with your vehicle’s 17-digit VIN. Our technicians will program the module before it ships. Installation is straightforward for a DIYer with basic tools, typically involving disconnecting the battery, unplugging the electrical connectors from the old PCM, removing it, and installing the new one. In some cases, a simple security or CASE relearn procedure may be required after installation, which can be done with many common scan tools.
Frequently Asked Questions
Is this module truly plug-and-play?
Yes. Because we program it to your specific VIN before shipping, it is designed to be a plug-and-play solution. In some GM vehicles, a security relearn procedure may be necessary after installation, which is a simple process that does not require a dealer visit.
How do I provide 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 order until we receive this information, as the programming is a critical part of the process.
What if my original part number is slightly different?
This module is compatible with several part numbers, including 12589462, 12602801, and 89017749. As long as your vehicle’s year, make, model, and engine are on the compatibility list, this unit will function correctly once programmed to your VIN.
Will this fix my specific problem?
This programmed 2005-2006 Yukon XL 2500 PCM is the correct solution for a failed module, which causes a wide range of electrical and drivability issues. While it solves many problems, we always recommend a proper diagnosis by a qualified mechanic to confirm the PCM is the point of failure.
Do I need to send my old PCM (core) back?
No core charge or return is required for this part. You can keep or responsibly dispose of your old module.