1999-2002 Savana 3500 Engine Control Module 218-11787 Programmed To Your VIN VIN PCM ECM

Is Your GM Truck or Van Running Rough?

If you’re dealing with a persistent check engine light, erratic engine behavior, or transmission shifting problems in your late 90s or early 2000s GM vehicle, a failing Powertrain Control Module (PCM) is often the culprit. The PCM is the central computer of your vehicle, responsible for managing everything from fuel injection and ignition timing to transmission shift points and emissions controls. When it starts to fail, it can cause a cascade of frustrating and difficult-to-diagnose issues. Don’t let a faulty computer keep your reliable truck or van off the road. This direct-replacement PCM is your solution to restore peak performance and reliability.

This isn’t just a generic, off-the-shelf part. We take the guesswork out of the repair by programming this module specifically for your vehicle using your VIN. This ensures that it has the correct factory software and the latest updates from GM, making the installation process as straightforward as possible. By matching the software to your exact vehicle configuration, we help eliminate compatibility issues that can arise from using incorrect or non-programmed modules.

Diagnosing a Failing GM PCM 16263494

A faulty powertrain control module can manifest in numerous ways, often mimicking other sensor or component failures. If you’re experiencing several of the following symptoms, it’s a strong indicator that your PCM may need replacement.

• ✔ Check Engine Light: The light is on, and you may have codes related to multiple, unrelated sensors (e.g., O2 sensor, MAP sensor, and transmission codes all at once).
• ✔ Poor Engine Performance: Noticeable loss of power, hesitation during acceleration, stumbling, or misfires.
• ✔ Reduced Fuel Economy: A sudden and unexplained drop in your vehicle’s MPG is a common sign the PCM is not managing the fuel mixture correctly.
• ✔ Erratic Transmission Shifting: Harsh shifts, delayed engagement into gear, or getting stuck in one gear (limp mode).
• ✔ Engine Stalling: The engine may stall intermittently for no apparent reason, either while driving or at idle.
• ✔ No-Start Condition: In severe cases, the vehicle may crank but refuse to start because the PCM is not firing the ignition coils or fuel injectors.
• ✔ Failed Emissions Test: The PCM plays a critical role in the emissions system, and a faulty one will almost certainly cause a test failure.

Plug-and-Play Solution for Your Vehicle

The biggest hurdle in replacing a PCM has always been the expensive programming required at a dealership. We eliminate that step. Simply provide us with your vehicle’s 17-digit VIN during checkout, and our technicians will flash the module with the latest, most stable software calibration from General Motors for your specific vehicle. This ensures all systems communicate correctly from the moment you install it.

This module is a direct replacement for multiple part numbers, including 16263494, 16265035, and 8162634940. It fits a wide range of popular GM trucks and vans, including the Chevrolet Express, GMC Savana, Chevrolet Silverado, GMC Sierra, Tahoe, Yukon, S10, and more. Please verify the part number and consult the detailed fitment list to ensure compatibility with your exact model and year.

Installation is straightforward for anyone with basic mechanical skills. Locate your old module, disconnect the negative battery terminal, unplug the electrical connectors, unbolt the old unit, and install the new one in its place. After reconnecting the battery, you may need to perform a simple security relearn procedure (often called a VATS relearn), which can typically be done without special tools and takes about 30 minutes. Instructions for this procedure are widely available online for your specific model.