Restore Peak Performance to Your GM Truck or Van
Is your Chevrolet Express, GMC Savana, or another compatible GM vehicle suffering from perplexing issues like erratic shifting, poor fuel economy, a no-start condition, or an illuminated Check Engine Light? The problem often lies with a failing Powertrain Control Module (PCM), the central computer responsible for managing your engine and transmission. This replacement PCM, part number 16263494, is the definitive solution to restore your vehicle’s original performance, reliability, and drivability.
The PCM is the brain of your vehicle’s operation. It processes data from dozens of sensors to precisely control fuel injection, ignition timing, transmission shift points, and emissions systems. When it fails, the symptoms can be widespread and difficult to diagnose. Instead of chasing individual sensor codes or performing costly mechanical repairs, replacing the faulty module is often the most direct and effective fix.
From the Diagnostic Bay
We had a 2001 Savana 2500 come into the shop with a complaint of harsh, unpredictable shifting and a persistent P0753 (Shift Solenoid ‘A’ Electrical) code. The owner had already replaced the transmission solenoid pack twice with no improvement. After confirming the wiring harness was intact, we suspected the PCM. The driver circuit inside the original module had failed, preventing it from properly commanding the solenoid. We installed a VIN-programmed PCM, performed the security relearn, and the van shifted perfectly. It saved the customer from the cost of an unnecessary transmission rebuild and got their work van back on the road fast.
Symptoms of a Failing Powertrain Control Module
- ✔ Check Engine Light is illuminated with various diagnostic trouble codes (DTCs).
- ✔ Vehicle fails to start or starts intermittently.
- ✔ Harsh or erratic automatic transmission shifting.
- ✔ Noticeable decrease in fuel efficiency.
- ✔ Engine stalling, stumbling, or misfiring.
- ✔ Communication errors with diagnostic scan tools.
- ✔ Failure to pass state emissions testing.
The Right Solution: A VIN-Programmed Express 3500 Van PCM
Don’t settle for a generic, off-the-shelf module that requires expensive dealership programming. We simplify the process. Upon purchase, you provide us with your vehicle’s 17-digit Vehicle Identification Number (VIN). Our technicians will then program this module with the latest, most up-to-date software directly from GM for your specific vehicle. This ensures perfect compatibility with your engine, transmission, and all factory options. It’s a true plug-and-play solution designed to get you back on the road with minimal downtime.
This module is a direct replacement for multiple part numbers, including 16263494, 16265035, 8162634940, 218-11787, and 21811787. Please verify the extensive fitment list to confirm compatibility with your specific year, make, and model.
Installation is Simple
Once you receive your programmed module, installation is straightforward. After swapping the hardware, you may need to perform a simple security relearn procedure, which typically involves cycling the ignition key. This allows the new PCM to synchronize with your vehicle’s anti-theft system. No specialized tools are required for this step. By ordering a pre-programmed Express 3500 Van PCM, you eliminate the need for towing your vehicle or paying for additional programming services.
Frequently Asked Questions
Do I need to send you my old PCM?
No, there is no core charge or need to send in your original module. This is an outright purchase.
How do I provide my VIN?
After you complete your purchase, you can send us a message with your 17-digit VIN. We cannot ship the module until we receive this information, as programming is specific to your vehicle.
Is this module difficult to install?
Installation is typically simple for someone with basic mechanical skills. It involves disconnecting the battery, unplugging the electrical connectors, and unbolting the old module to swap in the new one. A security relearn procedure (key cycle) is required afterward.
Will this fix my transmission shifting problems?
A faulty PCM is a very common cause of shifting issues in these GM vans and trucks. While not a guarantee for every situation, if you’ve ruled out mechanical faults, replacing the PCM is a highly effective solution for electronically-controlled shifting problems.
What if my original part number is not 16263494?
This module is compatible with several part numbers, including 16265035 and 8162634940. Please check the fitment list and compatible part numbers provided in the description to ensure it matches your vehicle’s requirements.