Restore Peak Performance to Your GM Truck or Van
Is your Chevrolet Express, GMC Savana, or S10 pickup suffering from baffling issues like stalling, erratic shifting, poor fuel economy, or a persistent check engine light? The Powertrain Control Module (PCM), the central computer of your vehicle, is often the culprit. This vital component manages everything from fuel injection and ignition timing to transmission shift points. When it begins to fail, it can create a cascade of frustrating and difficult-to-diagnose problems. This replacement PCM, part number 16263494, is the definitive solution to restore your vehicle’s reliability and drivability.
The Plug-and-Play Solution: Your Pre-Programmed Savana 1500 PCM
Forget expensive trips to the dealership for programming and software updates. We handle the complex part for you. Before this module ships, our technicians will program it with the latest official GM software updates specifically matched to your vehicle’s Vehicle Identification Number (VIN). This ensures that the module communicates flawlessly with all other systems in your truck or van, just as the original did. This VIN-specific programming is critical for proper engine function, transmission control, and emissions compliance. You receive a part that is truly ready for installation right out of the box, saving you time, money, and hassle.
From the Diagnostic Bay
We had a 2001 Chevy Express 2500 work van come into the shop that was driving the owner crazy. It would randomly stall at stoplights and had a very harsh 1-2 shift. The owner had already replaced the throttle position sensor and the mass airflow sensor with no change. We connected our scan tool and found no specific sensor codes, but we did see intermittent communication loss with the PCM. After confirming the power and ground connections to the module were solid, we knew the internal logic of the original PCM was failing. We installed a VIN-programmed Savana 1500 PCM like this one, performed the quick security relearn, and the van ran perfectly. The stalling vanished, and the transmission shifted smoothly. It’s a classic case of a failing computer mimicking other problems.
Common Symptoms of a Failing PCM
- ✔ Check Engine Light is illuminated, often with communication error codes (U-codes).
- ✔ Engine stalling, stumbling, or hesitating for no apparent reason.
- ✔ Harsh or erratic automatic transmission shifting.
- ✔ Vehicle refuses to start, even with a good battery and starter.
- ✔ Noticeable decrease in fuel efficiency.
- ✔ Failure to pass state emissions testing.
- ✔ Other warning lights on the dashboard appearing randomly.
This module is a direct replacement for multiple GM part numbers, including 16263494, 16265035, and 8162634940. By providing your VIN upon purchase, you guarantee a perfect match and a seamless repair process. Don’t let a faulty computer keep your reliable GM vehicle off the road. Order today and restore the performance and dependability you count on.
Frequently Asked Questions
Do I need to program this module?
No, you do not. We program the module to your vehicle’s specific VIN before we ship it to you. It arrives ready to be installed.
What information do you need from me?
After you complete your purchase, you will need to provide us with your vehicle’s 17-digit VIN. This is typically found on the driver’s side dashboard (visible through the windshield) or on the driver’s side door jamb sticker.
Is any other procedure needed after installation?
In most cases, you will need to perform a simple security relearn procedure, also known as a CASE relearn or Passlock relearn. This procedure can typically be done without special tools and involves a sequence of turning the key. Instructions are widely available online for your specific model.
How can I be sure my old PCM is the problem?
Diagnosing a faulty PCM can be tricky. The best method is to have a qualified technician rule out all other potential causes first, such as sensors, wiring, and power/ground issues to the module. If all other components check out and symptoms persist, the PCM is the most likely cause.
Will this fit my vehicle if it’s not a Savana 1500?
Yes, this PCM fits a very wide range of GM trucks and vans from approximately 1998 to 2002, including the Chevy Express, Silverado, Tahoe, S10, Blazer, and their GMC counterparts like the Sierra and Yukon. Please review the detailed fitment list on this page to confirm compatibility with your exact model.