Restore Peak Performance to Your GM Truck or SUV
Is your trusted Chevy, GMC, or Cadillac suffering from baffling issues like a persistent check engine light, rough idling, stalling, or erratic transmission shifting? These are classic signs of a failing Powertrain Control Module (PCM), the electronic brain of your vehicle. Don’t let a faulty computer sideline your workhorse. This fully programmed 09355699 PCM is the reliable, straightforward solution to get your vehicle back on the road and running exactly as it should.
Common Symptoms & Your Solution
A failing PCM can manifest in numerous frustrating ways. If you’re experiencing any of the following, this module is the definitive fix:
- Unexplained Check Engine Light with codes like P0601, P0605, or P0606
- Engine stalling or cutting out while driving
- Harsh or unpredictable automatic transmission shifts
- Noticeable decrease in fuel economy
- No-start condition where the engine cranks but won’t fire
- Misfire codes (P0300-P0308) that persist after replacing plugs, wires, and coils
Instead of endlessly chasing symptoms, address the root cause. We take a quality, inspected used module and flash it with the latest official GM software calibrated specifically to your vehicle’s VIN. This ensures all engine and transmission parameters are set correctly for optimal performance and reliability, a critical step often missed by local shops. This professionally programmed 09355699 PCM is ready to restore the dependable operation you rely on every day.
Features & Benefits
- ✔ VIN-Specific Programming: We flash the unit with your vehicle’s exact VIN, ensuring perfect compatibility and communication with other onboard modules.
- ✔ Plug-and-Play Installation: Arrives ready to install. In most cases, you will only need to perform a simple security relearn procedure that you can do yourself in 15-20 minutes.
- ✔ Updated GM Software: Programmed with the newest calibrations from General Motors to correct original factory flaws and improve performance.
- ✔ Cost-Effective Repair: A smart, affordable alternative to a costly trip to the dealership, delivering the same reliable results.
- ✔ Direct-Fit Replacement: Guaranteed to interchange with part numbers 09355699, 16266645, 9355699, 16250279, 16258815, 09366810, and 9366810.
- ✔ Peace of Mind: This unit is backed by our one-year replacement warranty.
An Expert’s Note on Late ’90s GM Vehicles: The Vortec-era engines in these trucks and SUVs are legendary for their durability, but their electronic systems require precision. The PCM doesn’t just manage the engine; it’s deeply integrated with the transmission. Incorrect or outdated software can lead to persistent shifting problems and torque converter lock-up issues that mechanics often misdiagnose as a failed transmission. By programming this 09355699 PCM with the latest GM updates for your specific VIN, we ensure the transmission receives the correct signals for smooth, efficient operation, potentially saving you from a thousand-dollar-plus transmission job. It’s the most critical step for long-term reliability.
Frequently Asked Questions
How do I provide my Vehicle Identification Number (VIN)?
After completing your purchase, simply reply to your order confirmation email with your 17-digit VIN. You can also send it to us through the website’s contact form with your order number. We cannot ship your part until we receive this information.
Will I need to do anything after installing the computer?
In most cases, you will need to perform a security relearn procedure (also known as a Passlock or VATS relearn). This procedure syncs the new computer with your vehicle’s anti-theft system and can be done without any special tools. Instructions are readily available online for your specific model, and the process typically involves turning the key on and off in a specific sequence. Some vehicles may also require a Crankshaft Variation Relearn (CASE relearn), which requires a capable scan tool.
Is this a new part?
No, this is a high-quality, tested computer that has been sourced from a salvaged vehicle. Each unit is thoroughly inspected and then programmed to ensure it functions to original factory specifications.
How can I be certain this part will fit my vehicle?
The best way is to match the part number from your original computer to one of the numbers listed (09355699, 16266645, etc.). You can also use the detailed fitment list on this page. Providing us with your VIN during checkout allows us to double-check and confirm perfect compatibility before we program and ship the unit.
What does “programmed to my VIN” actually mean?
It means we load the specific software and calibration files from GM that match your vehicle’s exact build—including its engine, transmission, axle ratio, and factory options. This ensures that everything works together seamlessly, just as it did when it left the factory.