Restore Peak Performance to Your GM Truck or SUV
Is your 2003-2007 Sierra, Silverado, Tahoe, or other GM vehicle suffering from perplexing engine issues? A faulty Powertrain Control Module (PCM), the central computer of your engine, is often the culprit behind poor performance, decreased fuel economy, and frustrating drivability problems. This replacement PCM, service number 89017750, is the definitive solution to get your truck back on the road running like new. It’s not just a part; it’s a comprehensive fix that arrives at your door programmed specifically for your vehicle.
From the Diagnostic Bay
We had a 2005 Silverado 1500 come in with a ghost of a problem. The owner complained of random stalling at stoplights and an occasional hard shift from first to second gear. There were no consistent trouble codes, just a generic communication error that would pop up now and then. We checked everything—fuel pressure, sensors, wiring harnesses—and couldn’t find a mechanical fault. On a hunch, we monitored the PCM’s live data and noticed the processor would momentarily drop out. We swapped in one of our VIN-programmed PCMs, and the truck immediately ran perfectly. The owner was thrilled to have his reliable truck back without weeks of guesswork. It’s a classic example of how a failing PCM can mimic a dozen other issues.
Is Your Truck Showing Signs of a Failing PCM?
A failing engine computer can manifest in numerous ways. If you’re experiencing any of the following symptoms, a faulty PCM could be to blame:
- ✔ Persistent Check Engine Light (CEL) on your dashboard.
- ✔ Unexplained drop in fuel mileage.
- ✔ Engine stalling, stumbling, or hesitating during acceleration.
- ✔ Rough or erratic idling.
- ✔ Harsh or incorrect automatic transmission shifting.
- ✔ The engine cranks but refuses to start.
- ✔ Communication errors with diagnostic scan tools.
- ✔ Failure to pass an emissions test.
Why Choose Our Programmed 2003-2007 Sierra PCM?
The biggest hurdle in replacing a modern vehicle’s computer is the programming. Our process eliminates that challenge entirely. When you order from us, you’re getting a module that is plug-and-play ready. We use your vehicle’s Vehicle Identification Number (VIN) to load the latest, most stable GM-certified software directly onto the module before it ships. This ensures perfect compatibility with your engine, transmission, and all factory options. You get the benefit of updated software that can resolve factory bugs and improve overall performance and efficiency, all without a costly trip to the dealership.
This module is a direct replacement for multiple service numbers, including 89017750, 12582605, 12589463, 12602802, 89017734, and 28042802. It fits a wide range of popular GM models such as the Sierra, Silverado, Avalanche, Suburban, Tahoe, Yukon, Escalade, and Hummer H2. Please verify your part number and use our vehicle fitment tool to ensure compatibility.
Installation and Security Relearn
Physically swapping the PCM is straightforward on most of these trucks, typically located under the hood on the driver’s side near the battery. After installation, your vehicle may require a simple security relearn procedure to sync the new PCM with the anti-theft system. This is a standard step that can usually be performed in your driveway without any special tools. We provide clear, easy-to-follow instructions to guide you through the process.
Frequently Asked Questions
Do I need to have this PCM programmed by a dealer?
No. The main benefit of our service is that we program the module to your vehicle’s specific VIN before we ship it. It arrives ready for installation, saving you time and money.
What is a security relearn procedure?
It’s a simple sequence of key turns that syncs the new PCM with your vehicle’s anti-theft or Passlock system. This allows the vehicle to start and run. Instructions are included with your order.
Where do I find my 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.
What happens if I don’t provide my VIN after ordering?
We cannot ship your order without a VIN. The programming is essential for the module to function correctly in your specific vehicle. We will contact you to obtain the VIN before processing your order.
Is this a direct replacement for my original module?
Yes, this is a direct-fit replacement for vehicles originally equipped with service numbers 89017750, 12582605, 12589463, 12602802, and others listed in the description.