Restore Peak Performance to Your GM Truck or SUV
Is your GMC Yukon, Chevy Silverado, or Cadillac Escalade suffering from erratic behavior, poor fuel economy, or a persistent check engine light? The Powertrain Control Module (PCM) is the central computer responsible for managing your vehicle’s engine and transmission. When it fails, it can cause a cascade of frustrating and difficult-to-diagnose issues. This direct-replacement PCM, part number 28042802, is the definitive solution to restore your vehicle’s factory performance, reliability, and drivability.
Unlike sourcing a used module from a junkyard, which carries an unknown history and requires expensive dealer programming, our service provides a fully tested unit that is programmed specifically for your vehicle. We use your Vehicle Identification Number (VIN) to load the latest, most stable software updates directly from GM. This ensures perfect communication between all vehicle systems and corrects many common factory drivability issues. It’s a plug-and-play solution designed to get you back on the road quickly and confidently.
From the Diagnostic Bay
We had a 2005 Silverado 2500 with the 6.0L come in with what the owner was convinced was a failing transmission. It had harsh, delayed shifts and would occasionally throw a transmission-related trouble code. He had already spent a significant amount of money at a transmission shop that couldn’t find a mechanical fault. After hooking up our diagnostic scanner, we noticed erratic data coming from the PCM. The module was sending incorrect signals to the transmission solenoids, causing the poor shifting. We installed one of our VIN-programmed PCMs, performed the security relearn, and the truck shifted like it just rolled off the assembly line. It’s a classic case where the root cause was electronic, not mechanical, saving the owner the cost of a needless transmission replacement.
Diagnosing a Faulty 2003-2006 Yukon PCM
A failing PCM can manifest in numerous ways, often mimicking other component failures. If your vehicle is experiencing any of the following symptoms, a faulty engine computer may be the culprit. This module is a common point of failure on these GM platforms due to its location in the engine bay, where it’s exposed to heat and vibration over many years of service.
Common Symptoms of PCM Failure
- ✔ Check Engine Light is illuminated with various trouble codes (DTCs), especially communication or internal processor fault codes.
- ✔ Harsh or erratic automatic transmission shifting.
- ✔ Engine stalling, stumbling, or misfiring for no apparent reason.
- ✔ Complete no-start condition where the engine cranks but will not fire up.
- ✔ Poor fuel economy and loss of engine power.
- ✔ Intermittent issues with gauges or other electronic components.
- ✔ Failure to pass state emissions testing.
The Importance of VIN Programming
Your vehicle’s VIN is more than just a serial number; it’s a key that unlocks the exact specifications of your truck, including engine size, transmission type, axle ratio, and factory-installed options. Programming this 2003-2006 Yukon PCM with your VIN ensures that all operating parameters are set correctly. This critical step prevents compatibility issues, guarantees proper engine and transmission function, and ensures all electronic systems work together as the manufacturer intended. Simply provide us with your VIN after purchase, and we handle the entire programming process before shipping.
This module is a direct replacement for a wide range of service numbers, including: 89017750, 12582605, 12589463, 12602802, and 89017734. Please verify your part number or consult the extensive fitment list to confirm compatibility with your specific vehicle.
Frequently Asked Questions
Do I need to have this PCM programmed by a dealer?
No. This PCM comes fully programmed to your vehicle’s specific VIN before it is shipped. This saves you the time, hassle, and expense of a trip to the dealership.
Is any additional setup required after installation?
In most cases, you will need to perform a security relearn procedure, often called a CASE (Crankshaft Angle Sensor Error) relearn. This can typically be done without special tools and involves a series of key cycles. Instructions are widely available online for your specific model, or a local mechanic can perform it quickly.
Where is the PCM located on my vehicle?
On most of the compatible GM trucks and SUVs like the Yukon, Tahoe, and Silverado, the PCM is located in the engine bay on the driver’s side, typically under or next to the battery tray.
How do I provide my VIN?
After you complete your purchase, you will receive instructions on how to send us your 17-digit VIN. We cannot program and ship your module until we receive this information.
Will this fix my specific problem?
This module is a direct solution for a failed PCM. While it resolves the many symptoms listed, it’s crucial to ensure your vehicle has been properly diagnosed. This part will not fix issues caused by other faulty components like sensors, wiring, or mechanical parts.