Restore Peak Performance to Your GM Truck or Van
Is your 1999-2000 Chevrolet Silverado, GMC Sierra, or other compatible GM vehicle suffering from perplexing issues like a persistent check engine light, erratic shifting, poor fuel economy, or a no-start condition? The Powertrain Control Module (PCM), often called the Electronic Control Module (ECM), is the central computer responsible for managing your engine and transmission. When it fails, it can cause a cascade of problems that are often misdiagnosed, leading to costly and unnecessary repairs of other components.
This direct-replacement PCM is the definitive solution to restore your vehicle’s factory performance and reliability. It arrives at your door fully programmed to your specific vehicle using your VIN. We install the latest software updates available from GM, ensuring optimal engine performance, fuel efficiency, and transmission shifting. This eliminates the need for expensive trips to the dealership for programming.
From the Diagnostic Bay
We had a 2000 Silverado 1500 come into the shop with a complaint of harsh shifting and intermittent stalling. The owner had already replaced the throttle position sensor and the mass airflow sensor, but the problem persisted. After connecting our scan tool, we noticed erratic data streams coming from the PCM. The internal processors were failing, sending incorrect commands to the transmission and fuel injectors. Installing a VIN-programmed PCM like this one solved the problem instantly. The truck ran smoother than it had in years, proving that starting with the ‘brain’ is often the right call.
Your Solution for a Faulty 1999-2000 Silverado PCM
Don’t let a failing computer keep your reliable truck off the road. This module is a direct fit for a wide range of GM vehicles from the era, including the Tahoe, Suburban, Express, Savana, S10, and Blazer. By providing us with your Vehicle Identification Number (VIN) during checkout, you receive a unit that is truly plug-and-play. The internal software will match your vehicle’s original configuration, including engine size, transmission type, and emissions equipment.
Common Symptoms of a Failing PCM:
- ✔ Check Engine Light (CEL) is illuminated with various codes
- ✔ Engine stalling, stumbling, or hesitating
- ✔ Harsh or erratic automatic transmission shifting
- ✔ Noticeable decrease in fuel economy
- ✔ Vehicle fails to start or has intermittent starting issues
- ✔ Communication errors with diagnostic scan tools
Replacing your old, failing 1999-2000 Silverado PCM with this quality-tested unit is the most effective way to resolve these issues and ensure your vehicle operates as the manufacturer intended. The installation is straightforward for a DIY mechanic or any professional technician. In most cases, a simple security relearn procedure (easily found online) is all that’s needed to get you back on the road.
Frequently Asked Questions
Why do I need to provide my VIN?
Your vehicle’s VIN (Vehicle Identification Number) allows us to program the PCM with the exact software and calibrations for your specific engine, transmission, and options. This ensures a seamless, plug-and-play installation without needing a trip to the dealer.
Is this part difficult to install?
For most models, the PCM is located in the engine bay and is held in by a few bolts and electrical connectors. The physical replacement is straightforward. After installation, you may need to perform a simple security relearn procedure, which typically involves turning the key on and off in a specific sequence.
Will this fix my check engine light?
If the check engine light and associated diagnostic trouble codes (DTCs) are caused by a faulty PCM, then this replacement part will solve the issue. It’s crucial to have your vehicle properly diagnosed to confirm the PCM is the root cause of the problem.
What are the compatible part numbers?
This module is a direct replacement for service numbers 16263494, 16265035, 8162634940, 218-11787, and 21811787. Please verify the number on your original module to ensure compatibility.
Does this fit vehicles other than the Silverado?
Yes, this PCM fits a very wide range of GM trucks and vans from approximately 1998 to 2002, including the GMC Sierra, Tahoe, Yukon, Suburban, S10/Blazer, Express/Savana vans, and more. Please review the detailed fitment list on this page to confirm it matches your vehicle.