Restore Peak Performance to Your GM Truck or Van
Is your truck or van suffering from frustrating issues like a persistent check engine light, erratic shifting, a no-start condition, or poor fuel economy? A failing Powertrain Control Module (PCM) is often the culprit behind these complex electronic problems. This replacement PCM, identified by service number 9355699, is the definitive solution to get your vehicle back on the road and running with factory-spec precision. We take the guesswork out of the repair by pre-programming the unit specifically to your vehicle’s VIN before it ships, making installation straightforward.
Common Symptoms & Your Solution
A faulty PCM can manifest in numerous ways, often mimicking other sensor failures. If you’re experiencing any of the following, this module is your likely solution:
- Check Engine Light (CEL) with communication-related codes (U-codes)
- Harsh or unpredictable automatic transmission shifting
- Engine stalling, stumbling, or misfiring
- Complete no-start condition where the engine cranks but won’t fire
- Noticeable decrease in fuel efficiency
- Failure to pass emissions testing
This fully programmed 9355699 PCM is designed to resolve these issues by restoring the critical link between your vehicle’s engine, transmission, and other electronic systems.
Features & Tangible Benefits
- ✔ VIN-Programmed for Your Vehicle: We flash the unit with your specific VIN and the latest GM software updates. This eliminates the need for an expensive trip to the dealership for programming, saving you time and money.
- ✔ Plug-and-Play Installation: Because it arrives pre-programmed, you can install it directly into your vehicle. In most cases, a security relearn procedure is all that’s needed to get running again.
- ✔ Direct OEM Replacement: This is a genuine, used OEM part, ensuring a perfect fit and seamless communication with all your vehicle’s existing systems. It is a direct replacement for part numbers 16266645, 09355699, and others listed in the fitment guide.
- ✔ Cost-Effective & Reliable: Sourced from salvaged vehicles and rigorously tested for functionality, this unit offers a dependable repair without the high cost of a new module.
- ✔ One-Year Replacement Warranty: This unit is backed by our one-year replacement warranty, giving you confidence and peace of mind in your purchase.
An Expert’s Note on Diagnostics
As a technician with over 20 years of experience, I’ve seen countless dollars wasted on replacing perfectly good sensors. A classic example is the 4.3L V6 in these S10s and Astros. A failing PCM can cause erratic ignition timing or fuel injector pulses, leading a mechanic to chase phantom misfires by replacing plugs, wires, caps, and rotors. The real issue, however, lies in the computer itself. By replacing the core component—this programmed 9355699 PCM—you’re not just fixing a symptom; you’re solving the root cause of the problem, ensuring a lasting and reliable repair.
Frequently Asked Questions
How do I provide my VIN for programming?
After you complete your purchase, you will need to send us your 17-digit Vehicle Identification Number (VIN). We cannot ship your part until we receive this information, as it is essential for programming the module correctly for your specific vehicle.
Will I need to do anything after installing this PCM?
Yes. While the main engine and transmission programming is complete, you will likely need to perform a security relearn procedure (often called a VATS relearn) to sync the new PCM with your vehicle’s anti-theft system. This procedure can typically be done without special tools and instructions are widely available online for your specific model.
Is this a new computer?
No, this is a high-quality, used OEM computer that has been sourced from a salvaged vehicle. Each unit is inspected and tested to ensure it is fully functional before being programmed and shipped.
My original part number isn’t 16266645, but my vehicle is listed. Will this work?
Yes. This PCM, identified by the common service number 9355699, is the correct replacement for a wide range of original part numbers used in these vehicles. As long as your Make, Model, and Year are on the compatibility list, this unit will function correctly once programmed to your VIN.
What does the one-year replacement warranty cover?
The warranty covers the failure of the unit itself. If the PCM fails within one year from the date of purchase, we will provide a replacement unit. It does not cover issues caused by incorrect installation or other failing components on the vehicle.