Get Your Truck Back to Peak Performance
Is your reliable GM truck or van suddenly running rough, shifting erratically, or refusing to start? A failing Powertrain Control Module (PCM) is often the hidden culprit behind these frustrating and hard-to-diagnose issues. Instead of wasting time and money on endless sensor replacements or facing an expensive trip to the dealership, get the definitive solution. This module is the brain of your vehicle, and we provide a fully programmed, ready-to-install unit that restores the performance and dependability you count on every day.
Common Symptoms of a Failing GM PCM & Your Solution
If you’re experiencing any of the following, a faulty computer is the likely cause. This pre-programmed module is designed to be the direct fix for:
- Persistent Check Engine Light (CEL)
- Engine stalling, sputtering, or misfiring
- Harsh or unpredictable automatic transmission shifting
- Poor fuel economy
- Complete no-start condition where the engine cranks but won’t fire
- Failed emissions testing
- Communication error codes with diagnostic scan tools
Our process eliminates the guesswork. We flash this module with the latest GM-approved software, specifically calibrated to your vehicle’s unique VIN. This ensures that once installed, your truck will operate exactly as the manufacturer intended. For anyone looking for a reliable fix for their 1999 Chevrolet 3500 PCM, this is the most straightforward and effective solution available.
Features & Benefits
- โ Plug & Drive Installation: Arrives programmed to your specific VIN. No extra programming or dealer visits required.
- โ Restored Drivability: Corrects common engine and transmission issues, providing smoother shifts and a stable idle.
- โ Updated GM Software: Flashed with the newest vehicle calibrations for optimal performance and efficiency.
- โ Guaranteed Compatibility: A direct replacement for part numbers 16250279, 09366810, and 09355699.
- โ Cost-Effective Solution: Avoids the high costs and scheduling hassles of dealership service departments.
- โ This unit is backed by our one-year replacement warranty.
An Expert’s Note: Over the years, I’ve seen countless truck owners replace perfectly good alternators, fuel pumps, and ignition coils trying to solve an electrical mystery. In many cases, the root cause was a failing PCM sending incorrect signals. A failing computer can mimic a dozen other problems, leading to expensive diagnostic dead ends. This pre-programmed 1999 Chevrolet 3500 PCM isn’t just a part; it’s a diagnostic shortcut that saves you time, money, and the headache of chasing ghosts in the machine.
This module is the central command unit for your entire powertrain. By ensuring it’s functioning with the latest software matched precisely to your vehicle, you’re not just fixing a problemโyou’re restoring the core of your truck’s reliability. The installation is simple, and the results are immediate. This is the correct way to replace your 1999 Chevrolet 3500 PCM and get your vehicle back to work.
Frequently Asked Questions
Do I need to do any programming myself?
Absolutely not. This module is sold as a plug-and-play solution. We handle all the programming before it ships. All you need to do is provide us with your vehicle’s VIN during checkout.
What is the security relearn procedure?
After installation, you may need to perform a simple security relearn, which takes about 10-15 minutes. Simply turn the key to the ‘ON’ position for 10 minutes, then ‘OFF’ for 10 seconds. Repeat this cycle two more times. On the third cycle, the vehicle should start and run normally. No special tools are required.
Will this fix my transmission shifting problems?
In these GM vehicles, the PCM controls both engine and transmission functions. Erratic shifting, getting stuck in a gear, or harsh engagement are very common symptoms of a failing PCM. This module is often the correct fix for those issues.
Is this compatible with other part numbers?
Yes, this unit is a direct, programmed replacement for several part numbers, including 16250279, 09366810, and 09355699. If your original module has one of these numbers, this part is a guaranteed match.
Where do I find my vehicle’s VIN?
Your 17-digit Vehicle Identification Number (VIN) can be found on your vehicle’s registration, insurance card, or on the vehicle itself. Look for a metal plate on the driver’s side of the dashboard (visible through the windshield) or on the driver’s side door jamb sticker.