Restore Peak Performance to Your GM Truck or SUV
Is your 2003-2006 GMC Yukon XL 2500, Sierra, Silverado, or other compatible GM vehicle suffering from frustrating and hard-to-diagnose issues? An erratic idle, poor fuel mileage, harsh shifting, or a persistent check engine light can often be traced back to a failing Powertrain Control Module (PCM). As the central computer for your engine and transmission, the PCM’s health is critical for proper vehicle operation. This replacement PCM, part number 28042802, is the definitive solution to restore your vehicle’s reliability and drivability.
We take the guesswork out of the repair. Unlike sourcing a module from a salvage yard, which carries an unknown history and incorrect programming, our service provides a fully tested unit programmed specifically for your vehicle. Simply provide us with your Vehicle Identification Number (VIN) after purchase, and we will flash the module with the latest, most stable GM factory software updates. This ensures seamless communication between all vehicle systems and corrects many issues that were present even in the original factory programming.
From the Diagnostic Bay
We once had a 2005 Sierra 2500 (which uses this exact PCM) come into the shop with a maddening, intermittent P0300 random misfire code. The owner had spent a fortune replacing spark plugs, ignition coils, and fuel injectors, but the problem always returned. After confirming the mechanical and ignition systems were sound, we focused on the computer. We installed one of our VIN-programmed PCMs, performed the security relearn, and the misfire was gone for good. The original module’s internal processor was failing under load, sending faulty signals to the ignition system. This simple swap saved the customer from more wasted time and money on unnecessary parts.
Is Your Yukon XL 2500 PCM Failing?
A faulty PCM can manifest in numerous ways, often mimicking other component failures. If you’re experiencing any of the following symptoms, a failing powertrain module is a likely culprit:
- ✔ Persistent Check Engine Light (CEL) with communication-related codes (U-codes) or performance codes.
- ✔ Unexplained drop in fuel economy.
- ✔ Engine stalling, stumbling, or hesitating during acceleration.
- ✔ Rough or inconsistent idling.
- ✔ Harsh or delayed automatic transmission shifts.
- ✔ The engine cranks but refuses to start.
- ✔ Failure to pass an emissions test.
The Importance of VIN Programming
Modern vehicles are complex systems. The PCM must be correctly calibrated for your vehicle’s specific engine, transmission, tire size, gear ratio, and emissions equipment. Our mandatory VIN programming service ensures this module is a true plug-and-play solution. Upon installation, you may need to perform a simple security or CASE (Crankshaft Angle Sensor Error) relearn procedure, which can often be done without special tools. This process syncs the new module with your vehicle’s anti-theft system and crankshaft position sensor, finalizing the installation and restoring full functionality.
This module is a direct replacement for multiple service numbers, including 89017750, 12582605, 12589463, 12602802, and 89017734. By ordering from us, you get a quality component, the correct software, and the peace of mind that you’re installing the right part the first time.
Frequently Asked Questions
What is the difference between a PCM and an ECM?
PCM stands for Powertrain Control Module, and ECM stands for Engine Control Module. In most modern GM vehicles like yours, the PCM is a single unit that controls both the engine and the transmission. The terms are often used interchangeably for this application.
How do I provide my VIN after purchase?
After you complete your purchase, you will receive instructions on how to send us your 17-digit VIN. We cannot ship your order until we receive this information, as the programming is essential for the part to function in your vehicle.
Is this part difficult to install?
Physically, the module is typically easy to access and replace, usually located under the hood near the battery. The critical part is the electronic setup. While our VIN programming makes it nearly plug-and-play, a security relearn procedure is often required. This can sometimes be done with a series of key turns, but may require a scan tool in some cases.
Will this fix my check engine light?
If the check engine light is caused by a faulty module or a software issue that our updated programming resolves, then yes, this will fix it. However, if the light is on due to another failing sensor or component on the vehicle, you will still need to diagnose and repair that separate issue.
Does this module come with new keys?
No, this module does not include keys. Our programming ensures it works with your existing keys after the security relearn procedure is completed, which syncs the module to your vehicle’s anti-theft system and original keys.