Is Your GM Truck or SUV Running Rough?
There’s nothing more frustrating than a vehicle that won’t perform as it should. If you’re dealing with a persistent check engine light, stalling, poor fuel mileage, or erratic shifting in your Sierra, Silverado, Tahoe, or other compatible GM vehicle, the problem often points to a failing Powertrain Control Module (PCM). As the central computer of your vehicle, the PCM is responsible for managing everything from fuel injection and ignition timing to transmission shift points. When it fails, the symptoms can be widespread and difficult to diagnose.
The Solution: A Reliable, Pre-Programmed PCM
This isn’t just a replacement part; it’s a complete solution. We offer a genuine GM Powertrain Control Module, part number 89017750, that arrives at your door fully programmed to your vehicle’s specific Vehicle Identification Number (VIN). We flash it with the latest, most stable software updates directly from GM, ensuring optimal performance and compatibility. This process eliminates the need for an expensive trip to the dealership for programming, saving you time and money.
From the Diagnostic Bay
We once had a 2005 Silverado 2500 in the shop with a maddening intermittent stalling issue. It would run perfectly for days, then suddenly die at a stoplight and refuse to restart for 10-15 minutes. There were no consistent trouble codes, and the owner had already replaced the fuel pump and crank sensor at another shop. After monitoring live data, we noticed the PCM would simply stop communicating when the engine bay got hot. The internal processor was failing under thermal stress. We installed one of our VIN-programmed PCMs, performed the quick security relearn, and the truck has been running flawlessly ever since. It’s a classic example of how a faulty computer can mimic mechanical problems.
Common Symptoms of a Failing GM PCM
- ✔ Persistent Check Engine Light (CEL) with communication or internal processor codes (e.g., P0601, P0606).
- ✔ Engine stalling, stumbling, or misfiring for no apparent reason.
- ✔ Vehicle refuses to start or experiences hard starting conditions.
- ✔ A sudden, unexplained drop in fuel economy.
- ✔ Harsh, erratic, or delayed automatic transmission shifting.
- ✔ Inability for a diagnostic scan tool to communicate with the module.
- ✔ Other warning lights, such as ABS or traction control, may illuminate incorrectly.
Why Choose Our Pre-Programmed GM Powertrain Control Module?
Getting your truck back on the road shouldn’t be a complicated process. Our goal is to provide a part that works correctly right out of the box. By programming the module to your VIN before shipping, we ensure that it has the correct software and calibrations for your vehicle’s specific engine, transmission, and emissions equipment. This is a crucial step that many sellers skip. This module 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 trucks and SUVs from 2003 to 2007.
Installation is Straightforward
Replacing the PCM is typically a simple mechanical task. It’s located in the engine bay, usually on the driver’s side near the battery or airbox. The process involves disconnecting the vehicle’s battery, unplugging the electrical connectors from the old module, unbolting it, and then installing the new one in the reverse order. While the module is programmed for your vehicle, some models may require a simple security relearn procedure to sync the new PCM with your vehicle’s anti-theft system. This procedure can usually be performed without special tools and instructions are widely available.
Frequently Asked Questions
How do I provide my vehicle’s VIN?
After you complete your purchase, you will need to send us your 17-digit VIN. You can add it as a note during checkout or reply to your order confirmation email. We cannot ship your part until we have this information.
Is this part truly plug-and-play?
Yes, for the most part. The module is programmed with your vehicle’s specific software. However, on many GM vehicles, you will need to perform a security relearn procedure (also called a Passlock relearn) to allow the vehicle to start. This typically takes 10-30 minutes and does not require a scan tool.
Will this fix my check engine light?
If the check engine light is caused by a faulty PCM (e.g., internal processor failure codes), then this replacement module will solve the issue. It’s crucial to properly diagnose the vehicle first to ensure the PCM is the root cause of the problem.
Do I need to send my old module back?
No, there is no core charge or need to return your old, faulty module. You can recycle it locally.
What vehicles does this fit?
This PCM fits a very wide range of 2003-2007 GM trucks and SUVs, including the Sierra, Silverado, Suburban, Tahoe, Yukon, Escalade, Hummer H2, and more. Please refer to the detailed fitment list on this page to confirm compatibility with your specific model and options.