Restore Peak Performance to Your GM Truck or SUV
Is your Chevrolet Silverado, GMC Sierra, or Cadillac Escalade suffering from frustrating issues like a persistent check engine light, poor fuel mileage, erratic shifting, or even a no-start condition? The heart of your vehicle’s engine and transmission management is the Powertrain Control Module (PCM), and when it fails, it can cause a wide range of problems. This replacement GM Truck Powertrain Module, part number 89017750, is the definitive solution to get your vehicle running like new again.
We take the guesswork and hassle out of the replacement process. Unlike a generic module from a parts store or salvage yard, this unit arrives at your door pre-programmed with the latest official GM software, specifically calibrated to your vehicle’s unique Vehicle Identification Number (VIN). This ensures seamless integration and optimal performance right out of the box, saving you an expensive trip to the dealership for programming.
From the Diagnostic Bay
We had a 2005 Silverado 2500 come in with what the owner was convinced was a bad transmission. It was shifting hard from 1st to 2nd and sometimes wouldn’t shift into overdrive. He’d already spent hundreds on a fluid flush and new solenoids at another shop. We hooked up our scanner and saw no specific transmission codes, but we did see intermittent communication loss with the PCM. After checking the wiring and grounds, we swapped in a known-good PCM. The shifting problems vanished instantly. The original PCM had failing internal drivers that were corrupting the signals to the transmission control module. It’s a classic case where the root cause isn’t where the symptom appears. This is why a quality, correctly programmed module is so critical.
Is Your Truck Showing Signs of a Failing PCM?
A faulty PCM can manifest in many ways, often mimicking other component failures. Before you spend money replacing sensors or transmission parts, check if your vehicle is exhibiting these common symptoms of PCM failure:
- ✔ Persistent Check Engine Light (CEL) with communication-related codes (U-codes) or random misfire codes.
- ✔ Unexplained stalling, especially when coming to a stop or at idle.
- ✔ Rough or unstable engine idle.
- ✔ A noticeable decrease in fuel economy.
- ✔ Harsh, delayed, or incorrect automatic transmission shifting.
- ✔ Engine cranks but refuses to start, despite having fuel and spark.
- ✔ Failure to pass an emissions test due to module communication errors.
The Importance of a VIN-Programmed GM Truck Powertrain Module
Your truck isn’t just a model; it’s a specific combination of engine, transmission, axle ratio, tire size, and other factory options. Our VIN programming service ensures that this replacement module knows every detail about your exact vehicle. This process is vital for:
- Proper Engine Operation: Correct fuel trims, ignition timing, and sensor readings.
- Smooth Transmission Function: Accurate shift points and torque converter lockup.
- Full System Integration: Correct communication with the anti-lock brake (ABS), body control (BCM), and anti-theft systems.
- Emissions Compliance: Running the correct software to meet federal and state requirements.
This module is a direct replacement for multiple service numbers, including 89017750, 12582605, 12589463, 12602802, 89017734, and 28042802. It is compatible with a vast range of popular GM trucks and SUVs from 2003 to 2007, including the Avalanche, Escalade, Hummer H2, Sierra, Silverado, Suburban, Tahoe, and Yukon. Please verify the fitment list to ensure compatibility with your specific year and model.
Installation is straightforward for a DIY mechanic. On most of these vehicles, the PCM is located in the engine bay on the driver’s side, near or under the battery. After physically swapping the module, a simple security relearn procedure is typically required 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 VIN for programming?
After you complete your purchase, we will contact you for your vehicle’s 17-digit VIN. We cannot ship your module until we receive this information, as the programming is specific to your truck.
Is this a plug-and-play part?
It is very close. The module is programmed to your VIN, making it electronically compatible. However, you will most likely need to perform a security relearn procedure (also known as a CASE relearn) to sync the module with your vehicle’s keys and anti-theft system. This can often be done at home in about 30 minutes.
Will this fix my check engine light?
If the check engine light and associated codes are being caused by a faulty PCM, then yes, this part will resolve the issue. It is essential to properly diagnose your vehicle’s problem before ordering to ensure the PCM is the root cause.
What if my original part number is not 89017750?
This module is a direct replacement for several different GM service numbers. Please check your original part number against our compatible list: 89017750, 12582605, 12589463, 12602802, 89017734, 28042802. If your number is on this list, this module will work for you.
Where is the PCM located on my truck?
On the vast majority of compatible GM trucks and SUVs (like the Silverado, Tahoe, and Sierra), the PCM is located in the engine compartment on the driver’s side, typically mounted to the fender well under or next to the battery tray.