Get Your GM Workhorse Back on the Road
Is your truck or van suffering from erratic behavior, a no-start condition, or a persistent check engine light? A failing Powertrain Control Module (PCM) can bring your vehicle to a grinding halt, costing you valuable time and money. This dependable, used engine computer is the straightforward, reliable solution to restore your vehicle’s performance and get you back to work. We take the guesswork out of the repair by programming the module to your specific Vehicle Identification Number (VIN) before it ships, ensuring a seamless installation process.
Common Symptoms of a Failing PCM & Your Direct Solution
If you’re experiencing any of the issues below, a faulty engine computer is the likely culprit. This module is the definitive fix for problems such as:
- Engine stalling or misfiring intermittently
- Drastic decrease in fuel economy
- Failure to communicate with diagnostic scan tools
- Harsh or incorrect shifting patterns
- Check Engine Light with PCM-related Diagnostic Trouble Codes (DTCs) like P0601, P0605, or P0606
- Vehicle will not start, despite having power
Installing our Programmed 9366810 Engine Computer resolves these frustrating issues by restoring the critical link between your vehicle’s engine, transmission, and sensors.
Features & Benefits
- ✔ VIN-Specific Programming: We flash the unit with the latest GM software updates using your vehicle’s VIN. This ensures perfect compatibility with your specific options and anti-theft system, eliminating the need for an expensive trip to the dealership.
- ✔ Plug-and-Play Installation: Because the module arrives pre-programmed, installation is simplified. In many cases, no complicated relearn procedures are required.
- ✔ Restored Performance & Efficiency: A properly functioning PCM ensures your engine operates at peak efficiency, restoring lost power and fuel economy.
- ✔ Cost-Effective Repair: Get a reliable, tested module for a fraction of the cost of a new unit from a dealer, without sacrificing quality or function.
- ✔ Guaranteed Compatibility: This computer is a direct replacement for a wide range of part numbers, including 09355699, 16266645, and more. See our full fitment list to confirm your vehicle.
- ✔ Peace of Mind Protection: This unit is backed by our one-year replacement warranty.
Expert Insight: Why VIN Programming is Non-Negotiable
As a technician with over two decades of experience, I can’t stress this enough: you can’t simply swap a used PCM from another truck and expect it to work. These late-90s GM vehicles use a Passlock or VATS anti-theft system that is tied directly to the original PCM’s programming. If the VIN in the replacement module doesn’t match the vehicle, the system will disable the fuel injectors, and the engine will not run. Our mandatory VIN programming service handles this critical step for you, ensuring the Programmed 9366810 Engine Computer integrates perfectly with your vehicle’s systems right out of the box.
Frequently Asked Questions
How does the programming process work?
After you place your order, you will need to provide us with your vehicle’s 17-digit VIN. Our technicians use this number to access the official GM database and load the exact software calibration and security information for your specific truck or van onto the module before we ship it.
Is this part truly plug-and-play?
For most vehicles on the compatibility list, yes. Because we pre-program the unit with your VIN, it arrives ready to be installed. In some rare cases, a simple security relearn procedure may be necessary, which can be done without special tools and typically takes about 30 minutes. Instructions can be easily found online or in a service manual.
How can I find my vehicle’s VIN?
Your VIN can be found on a metal plate 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.
How do I confirm this fits my vehicle?
Please check the extensive fitment list provided on this page. The most accurate way to ensure compatibility is to match the part number from your original computer to one of the numbers listed, such as 9366810, 09355699, or 16266645. This Programmed 9366810 Engine Computer is designed for a wide array of 1998-1999 GM models.
Is this a new or used computer?
This is a high-quality, tested computer that was carefully recovered from a salvaged vehicle. Each unit is inspected and verified to be fully functional before being programmed and shipped.
What does the one-year replacement warranty cover?
This unit is backed by our one-year replacement warranty. This covers the part itself against failure or defects for one full year from the date of purchase. If the unit fails within this period, we will provide a replacement.