Get Your Duramax Back on the Job, Fast.
There’s nothing more frustrating than a powerful work truck that won’t run right. If your 2001 GM HD truck is suffering from erratic behavior, no-start conditions, or mysterious error codes, a failing Powertrain Control Module (PCM) is often the culprit. This isn’t just an inconvenience; it’s downtime that costs you time and money. This replacement PCM is the reliable, straightforward solution to restore your truck’s performance and get you back to work with confidence.
Common Symptoms & Your Solution
A failing PCM can manifest in numerous ways, leaving you chasing problems that aren’t there. If you’re experiencing any of the following, this module is your definitive fix:
- Complete no-start or intermittent starting issues.
- Poor or rough idling and stalling.
- Significant loss of engine power and throttle response.
- Harsh or incorrect shifting from the Allison transmission.
- Check Engine Light (CEL) with communication-related Diagnostic Trouble Codes (DTCs) like U0100.
- Unexplained electrical issues or instrument cluster malfunctions.
This isn’t a generic, off-the-shelf part. We flash this 2001 Sierra 3500 PCM 97780075 with the latest GM software updates, specifically programmed to your truck’s unique Vehicle Identification Number (VIN). This critical step ensures that all systems, from the fuel injectors to the transmission, operate exactly as the factory intended.
Features & Benefits
- ✔ VIN-Programmed for Your Truck: Arrives ready for installation, eliminating the need for an expensive trip to the dealership for programming.
- ✔ Restores Peak Performance: Corrects engine and transmission issues, bringing back the power and reliability your Duramax diesel is known for.
- ✔ Plug-and-Play Design: Mounts in the original location (LH front, under the battery) using the factory connectors for a hassle-free swap.
- ✔ Updated GM Software: Flashed with the newest calibrations to address known factory issues and improve drivability.
- ✔ Direct-Fit Solution: A reliable replacement for part numbers 9388505, 97780075, 977800770, and 9355100 for a perfect match.
- ✔ Peace of Mind: This unit is backed by our one-year replacement warranty.
Expert Insight: The Brains Behind the Brawn
In the 2001 Duramax platform, the PCM does more than just manage the engine—it’s in constant communication with the Transmission Control Module (TCM) for the Allison 1000 series transmission. When a 2001 Sierra 3500 PCM 97780075 fails, it often sends corrupt data, leading to the harsh shifting or “limp mode” that many owners dread. Our VIN-specific programming ensures these two critical modules communicate flawlessly, protecting your transmission from potential damage and restoring the smooth, powerful operation you depend on when towing heavy loads.
Stop guessing and replace the core of your truck’s electronic system. By installing a correctly programmed module, you’re not just fixing a single problem—you’re restoring the entire powertrain’s operational integrity. Get the right part, the 2001 Sierra 3500 PCM 97780075, programmed specifically for your heavy-duty truck and get back on the road with confidence.
Frequently Asked Questions
Do I need to send you my old PCM?
No, there is no core charge or need to send us your original module. This is a direct replacement part that we program and ship to you.
What information do you need from me?
After you complete your purchase, you must provide us with your 17-digit Vehicle Identification Number (VIN). This is essential for us to program the PCM correctly for your specific truck’s options and calibrations.
Is any additional programming required after installation?
While the PCM comes fully programmed for your engine and transmission, you will likely need to have a qualified technician perform a security relearn procedure and a crankshaft position sensor relearn (CASE learn) after installation. This is a standard procedure required for the vehicle to function correctly with the new module.
Will this fit my gas engine truck?
No, this specific PCM is only for the 2001 model year GMC Sierra and Chevrolet Silverado 2500 & 3500 trucks equipped with the diesel engine.
Where is this part located on the truck?
The Electronic Control Module, or PCM, is located on the driver’s side of the engine bay, mounted under the battery tray.