Get Your GM Truck or Van Back on the Road, Fast.
There’s nothing more frustrating than a reliable workhorse that suddenly won’t start, stalls unexpectedly, or runs erratically. When your late 90s GM truck, van, or SUV starts acting up, the Powertrain Control Module (PCM) is often the culprit. This isn’t just a part; it’s the brain of your vehicle, and when it fails, it can bring everything to a halt. This genuine OEM engine computer is your direct, no-nonsense solution to get your vehicle running dependably again. We take the guesswork out of the repair by pre-programming this unit specifically to your vehicle’s VIN, ensuring a straightforward installation and a return to factory performance.
Common Failure Symptoms & Your Direct Solution
If you’re experiencing any of the following issues, a failing PCM is a very likely cause. This professionally programmed Programmed 09355699 PCM is designed to be the definitive fix for these complex electrical headaches:
- Complete no-start condition or intermittent starting
- Engine stalling for no apparent reason
- Harsh or erratic automatic transmission shifting
- Check Engine Light is on with communication-related Diagnostic Trouble Codes (DTCs)
- Poor fuel economy and reduced engine power
- Inability for a scan tool to communicate with the computer
Features & Real-World Benefits
- ✔ VIN-Specific Programming: We flash the module with the latest GM software updates using your VIN. This means it’s ready to install right out of the box, with no expensive trip to the dealer required.
- ✔ Genuine OEM Core: Sourced from a salvaged vehicle, this is an original equipment part, not a low-quality aftermarket alternative. This ensures perfect compatibility with your vehicle’s factory systems.
- ✔ Plug & Play Installation: Once programmed, this module is designed for a direct swap. In most cases, after installation, you will simply need to perform a security relearn procedure, which can be done without special tools.
- ✔ Cost-Effective Solution: Avoid the high costs and long waits associated with a new computer from a dealership. This is a practical, affordable way to solve a complex problem.
- ✔ Restored Drivability: A correctly functioning PCM restores crisp transmission shifts, proper engine performance, and the overall reliability you depend on.
- ✔ Peace of Mind: This unit is backed by our one-year replacement warranty.
An Expert’s Note on GM Security Systems
“A common question we get for these late ’90s GM vehicles is about the security system (VATS/Passlock). A generic, non-programmed computer will almost always result in a no-start ‘security’ lockdown. That’s why our VIN programming service is so critical. We ensure the foundational data on the module matches your vehicle’s identity. After you install this Programmed 09355699 PCM, you may need to perform a simple 10 or 30-minute key-cycle relearn. This syncs your key to the new module and fully restores the security system’s function, saving you a tow to the shop and significant diagnostic fees.”
Frequently Asked Questions
What is a PCM and what does it do?
The Powertrain Control Module (PCM), also known as an Engine Control Unit (ECU), is your vehicle’s main computer. It controls all aspects of engine and transmission operation, including fuel mixture, ignition timing, and transmission shift points, to ensure optimal performance and efficiency.
Is this a simple plug-and-play installation?
Yes, this is as close to plug-and-play as it gets. Because we program the Programmed 09355699 PCM to your VIN before shipping, you will not need a dealer-level scan tool. After installation, you will typically only need to perform a security relearn procedure, which involves a series of key cycles. Instructions for this are widely available online or in service manuals.
Where do I provide my VIN?
After you complete your purchase, you will need to send us your 17-digit Vehicle Identification Number (VIN). You can typically add it as a note during checkout or send it to us in a message referencing your order number. We cannot ship the part until we have your VIN.
Will this fix my specific problem?
While this part is the solution for a wide range of common issues, proper vehicle diagnosis is always recommended. If your vehicle exhibits the symptoms listed above, a faulty PCM is a very common cause. This part is designed to fix issues directly related to the computer itself.
What if my original part number is slightly different?
This computer is a direct replacement for several service numbers, including 09355699, 16266645, 16250279, and others listed in the description. As long as your vehicle is on the compatibility list, this unit will function correctly once programmed to your VIN.
What does the one-year replacement warranty cover?
This unit is backed by our one-year replacement warranty. This covers the module itself against failure for one year from the date of purchase. If the unit fails within that period, we will provide a replacement.