Is your trusty GM truck or van suddenly unreliable? Stalling, running rough, or refusing to start can bring your work to a grinding halt. When the brain of your engine—the Powertrain Control Module (PCM)—starts to fail, it can cause a host of frustrating and confusing problems. This isn’t just an inconvenience; it’s downtime you can’t afford. Get back on the road with confidence with this fully programmed, VIN-matched OEM engine computer.
Common Symptoms & Your Solution
A failing PCM can mimic many other issues, but common signs include a persistent Check Engine Light, erratic engine behavior, poor fuel economy, harsh shifting, or a complete no-start condition. You might see diagnostic trouble codes (DTCs) related to sensor circuits, injector drivers, or internal module failures. This unit is the direct solution, engineered to restore the precise control your vehicle’s engine and transmission require. By purchasing a pre-programmed GMC 1500 PCM 9366810, you are bypassing the expensive dealership visit and getting a reliable part that’s ready to work as hard as you do.
- ✔ Plug-and-Play Installation: Arrives flashed with the latest GM software and programmed to your vehicle’s specific VIN. This ensures a seamless installation process without the need for a trip to the dealer.
- ✔ OEM Reliability, Affordable Price: Get the proven performance and durability of an original GM part from a salvaged vehicle, ensuring perfect fitment and function at a fraction of the cost of a new unit.
- ✔ Solves Common Running Issues: The definitive fix for problems like stalling, no-start conditions, poor performance, and various electronic-related trouble codes.
- ✔ Broad Compatibility: This computer is a direct replacement for multiple part numbers, including 09355699 and 16266645, fitting a wide range of late-90s GM trucks, vans, and SUVs.
- ✔ One-Year Replacement Warranty: This unit is backed by our one-year replacement warranty, giving you confidence and peace of mind in your repair.
Expert Insight: Why VIN Programming is Critical
Back in the late 90s, GM’s Vehicle Anti-Theft System (VATS/Passlock) was a game-changer. It links your truck’s ignition key, body control module, and PCM together. You can’t just grab a computer from a junkyard and expect it to work; the truck simply won’t start because the security codes won’t match. Our process of programming the PCM to your specific VIN before shipping is what makes this a true plug-and-play solution. We handle the complex electronic handshake for you, so when you install it, your truck recognizes it as the correct part, saving you time, money, and the headache of a tow to the dealership.
Don’t let a faulty computer keep your vehicle sidelined. This programmed GMC 1500 PCM 9366810 is the smart, efficient solution to restore your engine’s performance and your vehicle’s reliability. Simply provide your VIN after purchase, and we’ll handle the rest, shipping you a part that’s ready to be installed right out of the box.
Frequently Asked Questions
Will I need to do any programming after I install this PCM?
No. This PCM comes fully programmed to the VIN you provide. In most cases, it is a plug-and-play installation. Some GM vehicles may require a simple, 10-minute security relearn procedure that you can do yourself with just the ignition key—no special tools are needed.
How do I provide my Vehicle Identification Number (VIN)?
After you complete your purchase, you will receive instructions on how to send us your 17-digit VIN. We cannot ship your part until we receive this information, as the programming is specific to your vehicle.
Is this a new computer?
This is a high-quality, used OEM computer sourced from a salvaged vehicle. We find that genuine OEM parts often provide superior reliability and compatibility compared to aftermarket alternatives.
How can I be sure my old PCM is the problem?
Common symptoms include a no-start condition where the engine cranks but won’t fire, random stalling, or multiple unrelated trouble codes. While this part fixes these issues, we always recommend having a qualified mechanic perform a full diagnosis to confirm the PCM is the point of failure before ordering.
Will this computer fit other vehicles besides a 1999 GMC 1500?
Yes. This PCM, identified by service number 9355699, fits a very wide range of 1998-1999 GM trucks, vans, and SUVs including the Chevrolet Silverado, Suburban, Tahoe, Express, GMC Sierra, Yukon, Savana, and Cadillac Escalade. Please check the fitment list on this page to confirm it matches your specific vehicle.