Restore Your Vehicle’s Brain and Get Back on the Road
Is your trusty GM truck, van, or SUV suddenly running rough, stalling, or refusing to start? A faulty Powertrain Control Module (PCM) can be the hidden culprit behind a host of frustrating issues, leaving you stranded and guessing what to fix next. This genuine OEM engine computer, service number 9355699, is the definitive solution to restore your vehicle’s performance and reliability. We take the guesswork out of the repair by pre-programming the module to your vehicle’s specific VIN with the latest factory software updates from GM. It arrives ready to install, saving you a costly trip to the dealership and getting your workhorse back in service fast.
Common Symptoms & Your Solution
A failing engine computer can mimic many other problems. If you’re experiencing any of the following, and have already checked the basics, a faulty PCM is the likely cause:
- Intermittent or constant Check Engine Light (CEL)
- Engine stalling or cutting out while driving
- No-start or hard-start conditions
- Noticeable drop in fuel economy
- Harsh or erratic transmission shifting
- Communication error codes (U-codes) with scan tools
- False sensor codes where the sensor itself is good
This programmed 9355699 PCM is the direct, reliable fix for these complex electronic issues, restoring communication between all your vehicle’s critical systems.
Features & Benefits
- โ VIN-Programmed for Your Vehicle: No expensive dealer trips for programming. This module arrives ready for installation, saving you significant time and money.
- โ Loaded with Latest GM Software: Ensures optimal engine performance, fuel efficiency, and transmission shifting based on the most current factory calibrations.
- โ Genuine OEM Used Part: Guarantees perfect fit and function with the durability of an original factory component, sourced from a salvaged vehicle.
- โ Broad Compatibility: A direct replacement for multiple part numbers (including 16266645, 16250279, and 09366810), ensuring you get the correct computer for your GM truck, van, or SUV.
- โ Backed by a One-Year Replacement Warranty: Drive with confidence knowing your purchase is protected. This unit is backed by our one-year replacement warranty.
An Expert’s Note on Vortec-Era PCMs
As a technician, I’ve seen countless hours and dollars wasted chasing phantom sensor failures on these late-90s GM vehicles. The truth is, the PCM is the central command center. When its internal circuits start to fail, it can send out bizarre signals that make a perfectly good crankshaft sensor or throttle position sensor appear faulty. Before you throw more parts at the problem, consider the source. Installing a properly programmed 9355699 PCM not only fixes the root cause but also prevents you from replacing components that weren’t broken in the first place. It’s the smart, efficient repair that gets the job done right the first time.
Frequently Asked Questions
What information do you need from me?
After you complete your purchase, you must provide us with your vehicle’s 17-digit Vehicle Identification Number (VIN). This is essential for us to program the computer correctly for your specific vehicle options and software calibrations.
Is this part difficult to install?
Installation is typically straightforward for someone with basic mechanical skills. The PCM is usually located in the engine bay. It involves disconnecting the negative battery terminal, unplugging the electrical connectors from the old unit, unbolting it, and then installing the new one in the reverse order. However, we always recommend consulting a service manual for your specific vehicle.
Does this computer require any additional programming after installation?
No. This programmed 9355699 PCM is flashed with your VIN and the latest GM updates before we ship it. In most cases, it is a plug-and-play installation. Some vehicles may require a security relearn procedure (often called a CASE relearn or anti-theft relearn), which is a simple process that can typically be done without special tools. Instructions can be easily found online for your specific model.
Will this fix my check engine light?
If the check engine light is on due to an internal failure of your old PCM, then yes, this part will resolve the issue. After installation, it’s always a good practice to clear any old codes with a standard OBD-II scanner.
Is this a new part?
No, as stated in the listing, this is a high-quality, tested computer that came from a salvaged vehicle. This allows us to provide a reliable, factory-original part at an excellent value.