Is Your GM Truck or Van Suddenly Unreliable?
There’s nothing more frustrating than turning the key on your trusted workhorse and getting nothing. Or maybe you’re dealing with baffling issues like stalling for no reason, harsh shifting, or a check engine light that won’t go away. If your 1998-1999 GM vehicle is acting up, a failing Powertrain Control Module (PCM) is often the culprit. This isn’t just an inconvenience; it’s a roadblock that costs you time and money. This fully programmed 9355699 PCM is the straightforward, reliable solution to get you back on the road and back to work.
Common Symptoms & Your Solution
A failing PCM can cause a wide range of confusing electrical problems. You might be experiencing:
- Complete no-start condition or intermittent starting
- Engine stalling or cutting out while driving
- Erratic or harsh automatic transmission shifting
- Poor fuel economy and reduced engine power
- Check Engine Light with communication-related Diagnostic Trouble Codes (DTCs) like P0601, P0605, or P0606
- Issues with gauges or other electronic components
Instead of endlessly swapping sensors or guessing at the problem, this pre-programmed engine computer directly addresses the root cause. It’s the brain of your vehicle’s engine and transmission, and installing a properly functioning unit is the key to restoring its original performance and dependability.
Features & Benefits
- ✔ Plug & Play Installation: This module arrives fully programmed to your vehicle’s specific VIN. No expensive trips to the dealer or specialized tools are required for programming. Simply install it and turn the key.
- ✔ VIN-Specific Flashing: We use your Vehicle Identification Number to load the exact GM-specified software for your truck or van’s options, ensuring perfect communication and operation of all systems.
- ✔ Updated GM Software: Your PCM will be loaded with the latest factory software updates available from General Motors, which can resolve common drivability issues and improve overall efficiency.
- ✔ OEM Reliability: This is a genuine, road-tested OEM part. It offers the same fit, form, and function as the original unit that came in your vehicle from the factory.
- ✔ Cost-Effective Repair: Get a reliable, programmed module at a fraction of the cost of a new computer from a dealership, solving your problem without breaking the budget.
- ✔ Peace of Mind: This unit is backed by our one-year replacement warranty. Drive with confidence knowing your purchase is protected.
Expert Insight: The Importance of Correct Programming
As a technician, I’ve seen countless headaches caused by improperly matched control modules on these late-90s GM trucks. Many people buy a used computer with the right part number, but don’t realize it’s still programmed for the donor vehicle’s engine, transmission, and axle ratio. This leads to persistent check engine lights, incorrect shift points, and even security system lockouts. Our process eliminates that entire ordeal. By flashing this programmed 9355699 PCM with your specific VIN, we ensure it’s a perfect electronic match for your vehicle right out of the box. It’s the difference between a frustrating weekend and a successful 30-minute repair.
Frequently Asked Questions
How do I provide my VIN number?
After you complete your purchase, simply send us a message with your 17-digit Vehicle Identification Number (VIN). We cannot ship your part until we receive the VIN, as the programming is a critical part of the order.
Is any additional programming needed after installation?
No. This programmed 9355699 PCM is a plug-and-play solution. In some specific models, a security relearn procedure may be required, which is a simple process that typically involves turning the key on and off in a specific sequence. Instructions can be easily found online for your vehicle model.
My original part number is slightly different, will this work?
This module is a direct replacement for several part numbers, including 16266645, 16250279, and 09366810. As long as your original part number is on our compatibility list and your vehicle is listed in the fitment chart, this unit will function correctly once programmed to your VIN.
Is this a new part?
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.
What if my mechanic says the PCM is the problem, but this doesn’t fix it?
While this part resolves the vast majority of issues described, vehicle diagnostics can be complex. We recommend ensuring that all other potential causes (like wiring, grounds, or other sensors) have been thoroughly checked. Our one-year replacement warranty covers the module itself, providing a replacement if the unit is found to be faulty.