Restore Peak Performance to Your GM Vehicle
Is your trusty GM truck, van, or SUV plagued by erratic engine behavior, poor fuel economy, a no-start condition, or a persistent Check Engine light? A failing Powertrain Control Module (PCM) is often the hidden culprit, turning your reliable workhorse into a source of daily frustration. This pre-programmed engine computer is the definitive solution to get your vehicle back on the road, running exactly as it should. We take the guesswork out of the repair by flashing this unit with the latest GM software updates, tailored specifically to your vehicle’s VIN.
Common Symptoms & Your Solution
If you’re experiencing any of the following issues, a faulty PCM is a likely cause. This module is the direct fix for:
- Harsh or incorrect automatic transmission shifting
- Unexplained drop in fuel mileage
- Engine stalling, stumbling, or rough idling
- Failure to pass emissions testing
- Intermittent or total no-start conditions
- Diagnostic trouble codes (DTCs) related to internal module failure (e.g., P0601, P0605, P0606)
- No communication with diagnostic scan tools
Installing our Programmed 09355699 PCM restores the critical communication between your engine and transmission, ensuring precise fuel delivery, ignition timing, and shift points for a smooth, reliable driving experience.
Features & Tangible Benefits
- ✔ VIN-Programmed for Your Vehicle: We flash the unit with the latest GM software using your specific VIN. This ensures perfect compatibility and proper function right out of the box, eliminating the need for expensive dealership programming.
- ✔ Direct-Fit Replacement: Engineered to replace a wide range of original part numbers, including 09355699, 09366810, 16266645, and more, for a hassle-free installation.
- ✔ Cost-Effective Repair: Get your vehicle back on the road without the shocking cost of a new computer from a dealership. This is a thoroughly tested, reliable used unit from a salvaged vehicle.
- ✔ Solves Complex Driveability Issues: Restores proper engine, fuel, and transmission control, putting an end to frustrating guesswork and unnecessary parts replacement.
- ✔ One-Year Replacement Coverage: This unit is backed by our one-year replacement warranty, giving you complete confidence in your repair.
Expert Insight from the Garage
I once had a ’99 Tahoe in the shop that had nearly every sensor under the hood replaced—twice. The owner was at his wit’s end. The scanner would intermittently lose connection, and it threw random, unrelated codes every week. The issue turned out to be the PCM’s internal processor failing under certain temperatures. It was a classic ghost in the machine. Swapping in a correctly programmed module like this one solved everything instantly. Sometimes, the problem isn’t the sensors; it’s the brain that’s reading them. This Programmed 09355699 PCM is the kind of solid fix that saves you from that diagnostic nightmare.
Frequently Asked Questions
What is a PCM and what does it do?
The Powertrain Control Module (PCM), often called the engine computer or ECM, is the electronic brain of your vehicle. It controls all aspects of engine and transmission function, including fuel injection, spark timing, emissions systems, and automatic shifting, to ensure optimal performance and efficiency.
Do I need to do anything after I install this PCM?
In most cases, this is a plug-and-play installation because we program it to your VIN. However, on some vehicles (especially those with advanced anti-theft systems like PassLock/VATS), a security relearn procedure may be required. This procedure is simple and can typically be performed by the owner without special tools.
How do I provide my VIN number?
After you complete your purchase, you will need to send us your 17-digit Vehicle Identification Number (VIN). You can typically add it as a note during checkout or send it to us in a message referencing your order number. We cannot ship the part until we have your VIN to program it.
Is this a new part?
No, this is a high-quality, tested used computer that was sourced from a salvaged vehicle. We inspect and program each unit to ensure it is fully functional and ready for installation, offering a reliable and affordable alternative to a new part.
How can I be sure this fits my vehicle?
Please review the detailed fitment list on this page. The most important step is to match your original part number to one of the numbers listed (e.g., 09355699, 09366810). Providing us with your VIN for programming also allows us to double-check for compatibility before we ship.
What does the one-year replacement warranty cover?
This unit is backed by our one-year replacement warranty. This covers the module itself in the event of failure during the warranty period. It provides for a direct replacement of the part.