Is Your GM Truck or Van Running Rough?
If your Chevrolet, GMC, or Isuzu is suffering from erratic engine behavior, poor fuel economy, harsh shifting, or a persistent check engine light, a failing Powertrain Control Module (PCM) could be the culprit. As the central computer for your engine and transmission, the PCM is critical for optimal performance. When it fails, 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 is the direct, reliable solution you’ve been looking for.
From the Diagnostic Bay
I once had a 2000 Chevy Express van come in that had its owner chasing ghosts for months. The van would randomly stall at idle and had a lazy 1-2 shift. The owner had replaced the throttle position sensor, the idle air control valve, and even the fuel pump based on various forum suggestions. When we hooked up our professional scanner, we saw erratic data streams from multiple sensors that didn’t make sense. The voltage references were fluctuating. Instead of throwing more parts at it, we tested the PCM’s outputs and found the 5-volt reference circuit was unstable. A new, properly programmed PCM fixed every single issue. It’s a classic case of symptoms pointing to sensors, when the real problem lies with the computer interpreting their signals.
Symptoms of a Failing Powertrain Control Module
- ✔ Check Engine Light is illuminated with various trouble codes.
- ✔ Engine stalling, stumbling, or misfiring.
- ✔ Harsh or erratic automatic transmission shifting.
- ✔ A sudden, unexplained drop in fuel mileage.
- ✔ The vehicle fails to start, even with a good battery and starter.
- ✔ Communication errors with diagnostic scan tools.
- ✔ Failure to pass state emissions testing.
The Plug-and-Play Solution: A Programmed PCM 16263494
Replacing the PCM on these GM vehicles isn’t just about swapping hardware. The module must be correctly programmed with your vehicle’s specific Vehicle Identification Number (VIN) and equipped with the latest software updates from General Motors. Our service eliminates the guesswork and the expensive trip to a dealership. When you order this Programmed PCM 16263494, we handle the complex part for you. Simply provide us with your VIN during checkout, and our technicians will flash the module with the correct, updated GM calibration for your exact vehicle. This ensures that once installed, the computer works seamlessly with your engine, transmission, and all related systems.
This module is a direct replacement for multiple part numbers, including 16263494, 16265035, and 8162634940. It fits a wide array of popular GM trucks and vans from the late 1990s and early 2000s, including the Astro, Safari, Silverado, Sierra, S10, Blazer, Tahoe, Yukon, Express, and Savana. Installation is straightforward and can typically be completed with basic hand tools in your own driveway. By restoring proper communication and control, this module can solve your vehicle’s performance issues and get you back on the road with confidence.
Frequently Asked Questions
Do I need to program this module after I receive it?
No. This PCM arrives at your door fully programmed to your vehicle’s specific VIN with the latest GM software updates. It is a true plug-and-play solution, requiring no further dealership visits or special tools for programming.
Where do I find my vehicle’s VIN?
Your 17-digit Vehicle Identification Number (VIN) can be found on the driver’s side of the dashboard (visible through the windshield), on the driver’s side door jamb sticker, or on your vehicle’s registration and insurance documents.
What happens if I forget to provide my VIN?
We cannot ship your part without a VIN. Programming is a mandatory step to ensure the module functions correctly in your vehicle. If you forget to add it during checkout, we will contact you to retrieve it, which may delay your order.
Will this fix my check engine light?
If the check engine light and associated codes are being caused by a faulty PCM, then yes, this part will resolve the issue. However, it’s always recommended to have the codes professionally diagnosed to ensure the PCM is the root cause of the problem.
Is any other setup required after installation?
In some cases, a security relearn procedure may be necessary, which can typically be done without special tools. Instructions are widely available, and it’s a simple process of cycling the key in the ignition. For most vehicles, it is a direct installation with no extra steps.
Which part numbers does this module replace?
This module is a direct replacement for part numbers 16263494, 16265035, 8162634940, 218-11787, and 21811787, ensuring wide compatibility across many GM models.