Is Your Trusty GM Truck or Van Suddenly Unreliable?
Stalling at stoplights, shifting erratically, or a frustrating no-start condition can sideline your workhorse vehicle, costing you time and money. If your dashboard is lit up with a check engine light and you’re experiencing poor performance, a failing Powertrain Control Module (PCM) is often the culprit. Don’t let a faulty computer dictate your vehicle’s reliability. Take control with a solution designed to get you back on the road with confidence.
Common Failure Symptoms & Your Direct-Fit Solution
A failing PCM can cause a wide range of issues that are often misdiagnosed. If you’re experiencing any of the following, this module is the definitive fix:
- Persistent Check Engine Light (CEL)
- Engine stalling, stumbling, or rough idling
- Harsh or incorrect automatic transmission shifting
- Noticeable decrease in fuel economy
- Complete no-start or intermittent starting problems
- Communication errors with diagnostic scan tools
This genuine OEM Programmed 9355699 PCM is the brain of your vehicle, and we deliver it ready for duty. We flash the unit with the latest official GM software updates and program it specifically to your vehicle’s unique Vehicle Identification Number (VIN). This critical step ensures all systems, from the engine and transmission to the anti-theft system, function exactly as the factory intended.
Features & Tangible Benefits
- ✔ VIN-Programmed for You: Arrives ready to install, eliminating the need for an expensive trip to the dealership for programming. This is a true plug-and-play solution.
- ✔ Updated GM Software: We flash the module with the newest calibrations from General Motors, often resolving factory bugs and improving performance and efficiency.
- ✔ Restored Drivability: By restoring correct communication between sensors, you’ll regain smooth shifting, a stable idle, and the dependable performance you rely on.
- ✔ Guaranteed Compatibility: Sourced from a salvaged vehicle, this is a genuine OEM part, ensuring a perfect physical fit and seamless electronic integration with your GM truck, van, or SUV.
- ✔ Peace of Mind Guarantee: This unit is backed by our one-year replacement warranty.
An Expert’s Note on 90s GM Electronics
As a technician who has worked on countless of these GMT400 and Express/Savana platforms, I can’t overstate the importance of proper VIN programming. In this era of GM vehicles, the PCM is deeply integrated with the Vehicle Anti-Theft System (VATS) or Passlock system. A generic, non-programmed computer will often result in a no-start condition that can be incredibly difficult to diagnose. Our pre-programming service handles this complex ‘handshake’ process for you, making the repair straightforward and successful the first time.
Stop chasing symptoms and fix the root cause. Ordering this Programmed 9355699 PCM is the most effective way to restore the function and dependability of your vehicle. Simply provide your VIN after purchase, and we’ll handle the rest, shipping you a part that’s ready to get your workhorse back on the job.
Frequently Asked Questions
How do I provide my VIN number?
After you complete your purchase, you will need to send us a message with your 17-digit Vehicle Identification Number (VIN). We cannot program or ship your PCM without it.
Will I need to do any additional programming after installation?
No. This PCM comes fully programmed to your VIN and is ready to be installed. In some rare cases, a Crankshaft Position Sensor Relearn procedure may be required, which can be done with a capable scan tool or by a local mechanic.
What’s the difference between a PCM, ECM, and ECU?
The terms are often used interchangeably. ECM (Engine Control Module) typically controls only the engine. A PCM (Powertrain Control Module) controls both the engine and the transmission. For these GM vehicles, PCM is the correct term. ECU (Electronic Control Unit) is a more generic term for any computer in a vehicle.
How can I confirm this part fits my vehicle?
Please check the extensive fitment list on this page. The most important step is to match the part number from your original computer to ‘9355699’ or one of the other compatible numbers listed. If they match, this is the correct part for you.
This is a used part. Is it reliable?
Yes. Each computer is sourced from a salvaged vehicle and inspected for physical damage. We then verify its ability to be programmed and communicate correctly. By flashing it with fresh, updated software, we ensure it performs reliably. It is also backed by our one-year replacement warranty for your peace of mind.