Restore Your GM Truck’s Performance and Reliability
Is your truck or van suffering from frustrating issues like a persistent check engine light, rough idling, stalling, or poor fuel economy? A failing Powertrain Control Module (PCM) is often the culprit, leaving your reliable workhorse sitting on the sidelines. This genuine GM engine computer, service number 9355699, is the definitive solution to get you back on the road with confidence. We take the guesswork and hassle out of the repair by pre-programming the unit specifically to your vehicle’s VIN before it ships. This means no expensive trips to the dealership for calibrationโit’s ready for installation right out of the box.
Common Symptoms & Your Solution
If you’re experiencing any of the following, a faulty PCM is the likely cause. This unit is designed to resolve these exact problems:
- Unexplained Check Engine Light (CEL)
- Engine stalling or cutting out intermittently
- Rough or erratic idling
- Poor acceleration and loss of power
- Decreased fuel mileage
- Harsh or incorrect transmission shifting
- Diagnostic Trouble Codes (DTCs) such as P0601, P0605, or communication errors.
By replacing your old module with this professionally prepared programmed PCM 9355699, you are installing a reliable, fully updated brain for your vehicle’s powertrain, restoring its original performance and efficiency.
Features & Benefits
- โ VIN-Specific Programming Included: We flash the module with your vehicle’s exact VIN and the latest GM software updates, ensuring it works seamlessly with your specific engine, transmission, and options.
- โ True Plug-and-Play Installation: Because the programming is done for you, this module requires no additional setup. Simply install it, perform the security relearn procedure if necessary, and drive away.
- โ Cost-Effective Repair: Avoid the high costs and scheduling delays of a dealership visit. This is the most efficient way to get your truck or van running properly again.
- โ Restored Drivability: Enjoy smoother shifting, consistent engine performance, and optimal fuel economy, just like the factory intended.
- โ Guaranteed Compatibility: This unit is a direct replacement for service number 9355699 and other compatible part numbers, ensuring a perfect fit and function for your 1998-1999 GM vehicle.
- โ Peace of Mind: This unit is backed by our one-year replacement warranty.
Expert Insight: Why VIN Programming is Non-Negotiable
As a technician with over two decades of experience, I can’t stress this enough: on these late-90s GM vehicles, the PCM is not a one-size-fits-all part. It’s the central computer that manages everything from fuel injection to transmission shift points and even the anti-theft system (Passlock/VATS). Installing a non-programmed computer from a junkyard will, at best, result in a no-start condition. At worst, it can cause drivability nightmares. Our process of programming this programmed PCM 9355699 to your VIN ensures the computer knows every detail about your truckโits engine size, transmission type, and security credentialsโfor a successful and lasting repair.
Frequently Asked Questions
Do I need to do any programming after I receive this?
No. We program the computer to your VIN before shipping. It arrives ready to be installed. In some cases, you may need to perform a simple security relearn procedure, which can be done without any special tools and takes about 30 minutes. We can provide instructions for this process.
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 a metal plate on the driver’s side of the dashboard, visible through the windshield.
Is this a new part?
This is a high-quality, tested used part sourced from a salvaged vehicle. Each unit is inspected and then loaded with fresh, vehicle-specific software to ensure reliable operation.
Will this fix my check engine light?
If the check engine light is caused by a faulty PCM (e.g., internal processor codes like P0601), this part will solve the issue. However, you should always diagnose the trouble codes to ensure the problem isn’t with a different sensor or component on the vehicle. This programmed PCM 9355699 is the solution for a failed computer module.
What information do you need from me?
After you place your order, you must provide us with your vehicle’s 17-digit VIN. We cannot ship your part until we have this information to complete the programming.
What if I have a problem with the computer?
We stand behind our products. This unit is backed by our one-year replacement warranty. If you encounter any issues with the module itself within the warranty period, please contact us for assistance.