Is Your GM Truck Running Rough? Restore Its Power and Reliability.
If you’re dealing with a persistent check engine light, poor engine performance, erratic transmission shifting, or a no-start condition in your Chevrolet, GMC, or Isuzu truck or van, a failing Powertrain Control Module (PCM) is the likely culprit. As the central computer for your vehicle’s engine and transmission, a faulty PCM can cause a wide range of frustrating and difficult-to-diagnose issues. This replacement module is the definitive solution to get your workhorse back on the road, running as the factory intended.
This isn’t just a generic part off the shelf. We program each module specifically to your vehicle using your unique Vehicle Identification Number (VIN). This ensures perfect compatibility and loads the latest, most stable software updates from GM, often resolving issues that were present even when the truck was new. By matching the software to your VIN, we ensure all systems—from fuel delivery and ignition timing to transmission shift points—operate in perfect harmony.
From the Diagnostic Bay
We once had a 2000 Chevy Express van in the shop with an intermittent stalling issue that no one could figure out. The owner had replaced the fuel pump, ignition coil, and multiple sensors. After hooking up our diagnostic tools, we noticed the PCM was intermittently dropping communication. It wasn’t setting a specific code, just causing chaos. We installed a VIN-programmed module just like this one, performed the security relearn, and the van ran flawlessly. It’s a classic case of the vehicle’s ‘brain’ being the source of the ghost-in-the-machine problems that parts-swapping can’t fix.
Symptoms of a Failing Powertrain Control Module
- ✔ Persistent Check Engine Light (CEL) that won’t clear or returns immediately.
- ✔ Unexplained drop in fuel economy.
- ✔ Engine stalling, stumbling, or running rough at idle.
- ✔ Harsh, delayed, or erratic automatic transmission shifting.
- ✔ Misfire codes (e.g., P0300, P0301) even after replacing ignition components.
- ✔ Vehicle fails to start, but the battery and starter are good.
- ✔ Communication errors with diagnostic scan tools.
The Smart Solution: A Programmed Chevy 3500 PCM
Replacing your module with our pre-programmed unit is the most efficient way to solve complex electronic issues. Forget expensive diagnostic fees and towing charges to a dealership. We handle the complex programming for you before we ship. This means you receive a part that is ready for installation right out of the box. All you need to do is install the module and perform a simple security relearn procedure, which can often be done without any special tools. This part is a direct replacement for multiple service numbers, including 16263494, 16265035, and 8162634940, ensuring broad compatibility across dozens of GM models.
Frequently Asked Questions
What does ‘VIN Programmed’ mean?
It means we load your vehicle’s specific factory software and calibration files onto the module using your 17-digit VIN. This ensures the PCM works perfectly with your truck’s engine, transmission, and options, eliminating compatibility problems.
Do I need to do anything after installing this PCM?
Yes. After installation, you will need to perform a security relearn procedure (also known as an anti-theft relearn). This syncs the new PCM with your vehicle’s ignition keys. The procedure is simple and typically involves turning the key on and off in a specific sequence. Instructions are readily available online for your specific model.
Where do I provide my VIN?
After you complete your purchase, we will contact you for your vehicle’s VIN. Alternatively, you can add your VIN in the notes section during checkout to speed up the process. We cannot ship the module until we have programmed it.
How do I know if this fits my vehicle?
Please review the detailed fitment list on this page. This module is compatible with a wide range of Chevrolet, GMC, Oldsmobile, and Isuzu trucks and vans from approximately 1998 to 2002. The most important step is to match the part number (ID) on your original module. This one replaces ID 16263494 and others listed.
Is this a difficult part to install?
Physically, the installation is straightforward. The PCM is typically located in the engine bay and is held in place by a few bolts. The main task is carefully disconnecting the battery and then unplugging the wire harness connectors. The post-installation security relearn is the final step.