Restore Peak Performance to Your GM Vehicle
Is your Chevrolet Express, GMC Savana, S10, or Silverado suffering from baffling electrical issues, poor engine performance, or a persistent Check Engine Light? The Powertrain Control Module (PCM), often called the vehicle’s brain, is the central command unit for your engine and transmission. When it begins to fail, it can cause a cascade of frustrating and potentially damaging problems. This direct-fit replacement PCM, part number 16263494, is the definitive solution to get your truck or van running reliably again.
This isn’t just a replacement part; it’s a complete, ready-to-install solution. We eliminate the guesswork and the need for expensive dealership visits by programming the module specifically for your vehicle using your VIN. This process ensures that all factory parameters are perfectly matched to your engine, transmission, and options. Furthermore, we install the latest available software updates from GM, which can correct underlying drivability issues and improve overall efficiency and performance beyond the original factory settings.
From the Diagnostic Bay
We had a 2001 GMC Savana 2500 work van come into the shop that had its owner completely stumped. The van would randomly stall at traffic lights and sometimes wouldn’t restart for 10-15 minutes. The check engine light was on, but the codes were intermittent and pointed towards multiple different sensors. The owner had already replaced the crank sensor and the ignition coil to no avail. After verifying all power and ground circuits to the module were solid, we diagnosed a failing PCM. The internal processors were overheating and causing communication drops. After installing one of our pre-programmed modules, the van started instantly and ran perfectly. The VIN-specific programming meant the security relearn took only a few minutes, and the customer was back on the road making money the same day.
Diagnosing a Faulty 1999-2002 Savana 2500 PCM
A failing powertrain control module can manifest in various ways, often mimicking other component failures. If you’re experiencing any of the following symptoms, a faulty PCM could be the culprit. Proper diagnosis is key, but these are the most common indicators that your vehicle’s computer has reached the end of its service life.
Common Symptoms of PCM Failure
- ✔ Check Engine Light: The light may be illuminated with communication-related trouble codes (U-codes) or false sensor codes.
- ✔ Engine Stalling or Misfiring: The engine may stall unexpectedly while driving or at idle, and you may notice random misfires.
- ✔ No-Start Condition: The engine cranks but refuses to start, even with a good battery and starter.
- ✔ Poor Fuel Economy: A sudden and unexplained drop in MPG can be caused by incorrect fuel and air calculations from a failing module.
- ✔ Harsh or Failed Shifting: The PCM controls transmission shift points. Erratic shifting, getting stuck in a gear, or failure to shift are common signs.
- ✔ Network Communication Issues: Your mechanic’s scan tool may be unable to communicate with the PCM, indicating a major internal failure.
The Plug-and-Play Advantage
Our goal is to make your repair as simple and straightforward as possible. By providing us with your vehicle’s VIN during checkout, you receive a module that is fully programmed and ready for installation. In most cases, the only additional step required is a simple security relearn procedure, which you can perform yourself without any special tools. This saves you hundreds of dollars in dealership programming fees and gets your vehicle back on the road faster.
Frequently Asked Questions
Do I need to have this PCM programmed?
No. This module comes fully programmed to your vehicle’s specific VIN before we ship it. It is ready for installation right out of the box.
What is a VIN and where can I find it?
The VIN (Vehicle Identification Number) is a unique 17-digit code for your vehicle. You can typically find it on the driver’s side dashboard (visible through the windshield), on the driver’s side door jamb sticker, or on your vehicle’s registration and insurance documents.
Will this fix my specific problem?
This PCM is a direct solution for a faulty module. If your vehicle has been properly diagnosed with a failed PCM, this part will resolve the related issues. It will not fix problems caused by other faulty mechanical or electrical parts.
Is any special installation required after I plug it in?
In many GM vehicles of this era, you will need to perform a simple security relearn procedure, also known as a VATS relearn. This typically involves turning the key to the ‘ON’ position for 10-15 minutes, then off, and repeating the cycle three times. This allows the new PCM to recognize your vehicle’s anti-theft system. Instructions are readily available online for your specific model.
Is this compatible with other part numbers?
Yes, this module is a direct replacement for several part numbers, including 16263494, 16265035, and 8162634940. Please check the fitment list to ensure it matches your vehicle.