Restore Peak Performance to Your GM Truck or Van
Is your trusty GM vehicle suffering from erratic behavior, a persistent check engine light, or a frustrating no-start condition? A failing Powertrain Control Module (PCM) is often the culprit, disrupting everything from fuel delivery to transmission shifting. This genuine OEM engine computer, service number 9355699, is the definitive solution to get your vehicle back to its reliable, workhorse status. We take the guesswork out of the repair by pre-programming the unit to your specific Vehicle Identification Number (VIN), ensuring a seamless installation and immediate results.
Common Symptoms & Your Solution
If you’re experiencing any of the following issues, a faulty PCM is the likely cause. This pre-programmed unit is designed to resolve them:
- Failure to start or intermittent stalling
- Poor fuel economy and reduced engine power
- Harsh or incorrect automatic transmission shifting
- Check Engine Light (CEL) with communication-related Diagnostic Trouble Codes (DTCs)
- Erratic idling or stumbling during acceleration
Features & Tangible Benefits
- ✔ VIN-Programmed for Your Vehicle: We flash this computer with the latest GM software updates using your vehicle’s unique VIN. This ensures it works perfectly right out of the box, eliminating the need for expensive dealer programming.
- ✔ True Plug-and-Play Installation: Once programmed, this PCM is ready to install. Simply disconnect the battery, swap the modules, and reconnect. In most cases, you’ll be back on the road in under an hour.
- ✔ Genuine OEM Reliability: Sourced from a salvaged vehicle, this is a tested, original equipment part—not a questionable aftermarket clone. It’s built to meet GM’s rigorous standards for durability and performance.
- ✔ Cost-Effective Repair: Get your truck or van running right again without the excessive cost of a brand-new computer from a dealership. This is a practical, budget-friendly solution for a critical repair.
- ✔ This unit is backed by our one-year replacement warranty. Your purchase is protected, giving you confidence and peace of mind.
Expert Insight: The Brain of Your Workhorse
In these late-90s GM trucks and vans, the PCM is more than just an engine controller; it’s the central command center. It manages the complex dance between the Vortec engine’s fuel injection and the 4L60E/4L80E transmission’s shift points. When it fails, the symptoms can be baffling. A properly programmed, OEM unit like this one is critical. It doesn’t just make the engine run—it restores the crisp shifts, reliable power, and overall drivability that made you depend on your GM vehicle in the first place. This isn’t just a part; it’s the restoration of your vehicle’s core reliability.
Frequently Asked Questions
Will this computer be ready to install?
Yes. After you provide your VIN, we program the module so it is ready for a plug-and-play installation. No further programming at a dealer is typically required.
What information do you need from me?
We only need your vehicle’s 17-digit Vehicle Identification Number (VIN) to program the computer correctly. Please provide it during or after checkout.
Is a security or CASE relearn necessary?
While the main programming is done, some vehicles may require a simple security relearn procedure (often called Passlock or VATS) or a Crankshaft Variation (CASE) relearn, which can be performed with a capable scan tool. These are standard procedures after a PCM replacement.
What if my original part number isn’t 9355699?
This PCM is a direct replacement for several part numbers. Please check the extensive fitment list on this page, which includes compatible numbers like 16266645, 16250279, and 09366810. If your number is on the list, this part will fit.
Is this a new part?
No, this is a genuine, used OEM computer that has been carefully sourced from a salvaged vehicle and fully tested to ensure proper function before being programmed for you.