Is Your GM Truck or Van Experiencing Frustrating Issues?
If your Chevrolet Astro, Silverado, Express, or GMC Sierra is suffering from erratic behavior like stalling, harsh shifting, a persistent check engine light, or even a no-start condition, a failing Powertrain Control Module (PCM) is often the culprit. As the central computer for your vehicle, the PCM manages everything from fuel injection and ignition timing to transmission shift points. When it fails, it can cause a cascade of problems that are difficult to diagnose and can leave your vehicle unreliable.
From the Diagnostic Bay
I once had a 2000 Chevy Express van towed in with a classic ‘bad PCM’ complaint. The owner had replaced the fuel pump and ignition coil, but it would still randomly stall and refuse to restart for hours. After confirming power and grounds to the module were solid (a critical first step!), we connected our scan tool and saw intermittent data loss. Instead of a complex wiring issue, it was a classic internal failure of the original PCM. We installed a VIN-programmed module just like this one, performed the security relearn, and the van fired right up. The owner was thrilled to have his reliable workhorse back on the road without a costly trip to the dealership for programming.
The Direct Solution: A VIN-Programmed 16263494 PCM
Don’t let a faulty computer keep your vehicle sidelined. This Powertrain Control Module is the definitive solution for a wide range of GM trucks and vans from 1998 to 2002. We take the guesswork and hassle out of the repair process. Simply provide us with your vehicle’s VIN (Vehicle Identification Number) during checkout, and our technicians will program the module with the latest, most stable software updates directly from GM. This ensures that when the part arrives, it’s a true plug-and-play solution, tailored specifically for your vehicle’s configuration.
Common Symptoms of a Failing PCM
- ✔ Check Engine Light is on with communication-related trouble codes (e.g., U-codes).
- ✔ Engine stalling, stumbling, or misfiring for no apparent reason.
- ✔ Harsh or erratic automatic transmission shifting.
- ✔ Reduced fuel economy and poor engine performance.
- ✔ The vehicle won’t start, and the security light may be flashing.
- ✔ Inconsistent or non-functional gauges on the instrument cluster.
Replacing your old, failing module with our pre-programmed unit restores critical engine and transmission logic, bringing back the smooth performance and reliability you depend on. This module is a direct replacement for part numbers 16263494, 16265035, 8162634940, 218-11787, and 21811787, guaranteeing a perfect fit and function.
Installation Note: While this module is programmed for your vehicle, some models may require a simple security relearn procedure after installation. This can typically be done without special tools and involves a sequence of key turns. Instructions are readily available online for your specific model.
Frequently Asked Questions
Why do you need my VIN?
Your VIN is essential for us to load the correct GM-certified software for your vehicle’s specific engine, transmission, and options. This ensures seamless communication between all modules and guarantees proper vehicle operation without a trip to the dealer.
Is this a plug-and-play part?
Yes, because we program it to your VIN, it is designed to be plug-and-play. On some GM vehicles, you may need to perform a simple security or anti-theft relearn procedure, which can usually be done in your driveway in about 30 minutes.
Will this fix my check engine light?
If the check engine light and associated codes are caused by a faulty PCM, this part will resolve the issue. It is crucial to properly diagnose the problem first, as other failing sensors or wiring issues can also trigger a check engine light.
How do I find my part number to confirm compatibility?
You can find the part number on a sticker on your original PCM. This module is a direct replacement for several part numbers, including 16263494 and 16265035. Matching one of these numbers ensures compatibility.
What is the difference between a PCM and an ECM?
ECM (Engine Control Module) and PCM (Powertrain Control Module) are often used interchangeably. A PCM controls both the engine and the transmission, while an ECM typically controls only the engine. For these GM vehicles, this unit is a PCM as it manages both systems.