Is Your Truck Running Rough, Stalling, or Refusing to Start?
A failing Powertrain Control Module (PCM) can bring your hardworking truck or van to a grinding halt. If you’re dealing with a persistent Check Engine Light, unpredictable stalling, rough idling, or poor fuel economy, the brain of your vehicle’s engine is likely the culprit. Don’t let a faulty computer keep you off the road. This pre-programmed PCM is the reliable, straightforward solution to restore your vehicle’s performance and get you back to work.
Common Symptoms of a Failing GM PCM & Your Solution
A bad PCM can cause a wide range of frustrating issues. You might be experiencing one or more of the following:
- Engine cranks but won’t start
- Random stalling or cutting out while driving
- Harsh or erratic automatic transmission shifting
- Noticeable drop in fuel mileage
- Failure to communicate with a scan tool
- Check Engine Light with codes related to internal module failure or driver circuits
This unit is the definitive fix for these problems. We take a genuine, road-tested OEM computer and flash it with the latest official GM software updates, specifically calibrated to your vehicle’s unique VIN. This ensures perfect compatibility and optimal performance, right out of the box. Installing our programmed 1998-1999 Chevrolet 3500 PCM 9366810 is the most effective way to solve these complex electronic issues and restore your truck’s dependability.
Features & Benefits
- ✔ Plug & Play Installation: Arrives programmed to your VIN. No expensive trip to the dealer for flashing is required.
- ✔ Restored Performance: Solves common issues like stalling, rough idle, and poor shifting, bringing back the smooth operation you expect.
- ✔ OEM Reliability: This is a genuine OEM part, ensuring the same quality and durability as the original unit in your vehicle.
- ✔ Updated Software: Flashed with the newest updates from GM, which can improve efficiency and correct factory bugs.
- ✔ Broad Compatibility: A direct replacement for multiple part numbers, including 09355699, 16266645, and 9366810, across a wide range of GM trucks, vans, and SUVs.
- ✔ Peace of Mind: This unit is backed by our one-year replacement warranty.
An Expert’s Note on Getting Back to Work
I once had a customer with a ’99 Savana work van who was losing jobs because his van would randomly stall in traffic. He’d replaced sensors and wires, but the problem persisted. The issue was a failing PCM. We sent him one of these pre-programmed units, he installed it in his driveway in under 30 minutes, and the van ran perfectly. He called back a week later, not just to say thanks, but to tell us he’d been able to confidently take on a big contract without worrying about his van breaking down. That’s what this is about: not just fixing a part, but restoring the confidence you have in your vehicle.
Take the guesswork out of your repair. By providing us with your VIN, you are guaranteed to receive a correctly configured module for your 1998-1999 Chevrolet 3500 PCM 9366810, ensuring a smooth and successful installation.
Frequently Asked Questions
Do I need to program this computer myself?
No. This computer arrives fully programmed to the VIN you provide after purchase. It is a plug-and-play solution, though a simple security relearn procedure may be necessary, which does not require any special tools.
How do I provide my VIN?
After you complete your purchase, we will contact you to request your vehicle’s 17-digit VIN. We cannot ship the module until we have this information to program it correctly.
Is this a new part?
No, this is a high-quality, used OEM computer sourced from a salvaged vehicle. Each unit is inspected and tested to ensure it is fully functional before being programmed and shipped.
What is the security relearn procedure?
For most GM vehicles of this era, the security relearn (VATS/Passlock) is simple. After installation, turn the key to the ‘ON’ position for 10-15 minutes, then turn it ‘OFF’ for 10 seconds. Repeat this cycle three times. On the fourth try, the vehicle should start. Instructions will be included.
Will this fit vehicles other than a 1998-1999 Chevy 3500?
Yes, this PCM is compatible with a very wide range of GM trucks, vans, and SUVs from that period that use service number 09355699. Please check the detailed fitment list on this page to confirm compatibility with your specific model.
What if I have an issue with the part?
We stand behind our products. This unit is backed by our one-year replacement warranty. If you encounter any issues with the module within one year of purchase, we will provide a replacement.