Restore Your Vehicle’s Performance and Reliability
Is your trusted GM truck, van, or SUV suddenly unreliable? Stalling, misfiring, or refusing to start can sideline your work or family vehicle, causing major frustration and downtime. The brain of your vehicle’s operation is the Powertrain Control Module (PCM), and when it fails, it can create a host of confusing and debilitating problems. This fully programmed, OEM Programmed 9355699 PCM is the definitive solution to get your vehicle back on the road, running exactly as it should.
Common Symptoms & Your Solution
A failing PCM can manifest in numerous ways, often mimicking other component failures. If you’re experiencing any of the following, a faulty engine computer is a likely culprit:
- Severe drop in fuel economy
- Engine stalling, stumbling, or misfiring
- Harsh or erratic transmission shifting
- Complete no-start condition where the engine cranks but won’t fire
- Check Engine Light with communication-related Diagnostic Trouble Codes (DTCs) like U-codes
- Inconsistent performance that comes and goes
Instead of chasing down endless sensor replacements or paying for expensive diagnostic time at a dealership, this module offers a direct fix. We take a genuine, used OEM computer and flash it with the latest GM software updates, specifically programmed to your vehicle’s unique Vehicle Identification Number (VIN). This means it arrives at your door ready for a simple, plug-and-play installation, restoring your engine and transmission’s critical logic and getting you back to work.
Features & Tangible Benefits
- ✔ VIN-Programmed for Your Vehicle: This PCM arrives ready to install right out of the box. No need for expensive trips to the dealership for programming—just plug it in and turn the key.
- ✔ Cost-Effective OEM Solution: Get the reliability and perfect compatibility of an original factory part without the high cost of a new unit. This is a smart, economical repair for your trusted vehicle.
- ✔ Restores Peak Operation: By replacing the faulty computer, you restore precise control over fuel delivery, spark timing, and transmission shifting, bringing back the smooth power and efficiency you depend on.
- ✔ Broad Compatibility: This Programmed 9355699 PCM is the correct replacement for a wide range of popular late-90s GM trucks, vans, and SUVs. Please see our detailed fitment list to confirm for your vehicle.
- ✔ Peace of Mind Included: This unit is backed by our one-year replacement warranty. Drive with confidence knowing your purchase is protected.
An Expert’s Take on the ‘Black Box’
As a technician, I’ve seen countless owners replace nearly every sensor on their Vortec engine trying to solve a persistent issue. In these late-90s GM vehicles, the PCM is the true ‘central command.’ It’s not just a simple computer; it’s constantly interpreting data from dozens of sensors to make real-time adjustments. When the internal processors or circuits degrade, the signals it sends out become corrupt, causing good parts to behave badly. Replacing a faulty PCM isn’t just swapping a part; it’s restoring the very foundation of your vehicle’s operational logic. This Programmed 9355699 PCM is the most direct path to fixing those ‘ghost’ issues for good.
Frequently Asked Questions
Do I need to do any programming myself?
Absolutely not. This PCM is sold as a fully programmed, plug-and-play solution. We handle all the flashing and software updates using your VIN before we ship the unit to you. All you need to do is install it.
How do I provide my vehicle’s VIN?
After you complete your purchase, you will need to send us your 17-digit VIN. You can typically add it as a note to your order during checkout or reply to your order confirmation email with the information. We cannot ship your part until we have your VIN.
Is this a new part?
No, this is a genuine, used OEM computer that has been sourced from a salvaged vehicle. Each unit is carefully inspected and tested before being programmed to ensure it is fully functional and ready for service.
What if my original part number is different from 9355699?
This PCM is a direct replacement for several part numbers. Please review the list of compatible service numbers in the description (e.g., 16266645, 16250279, etc.). As long as your original module’s part number is on that list, this unit will be a perfect fit.
My mechanic says the PCM isn’t communicating. Will this fix it?
A ‘No Communication’ error is one of the most common signs of a complete internal PCM failure. While you should always ensure your vehicle’s wiring and power grounds are intact, this programmed PCM is the correct and most common solution for that specific problem.
Will I need to perform a security relearn procedure?
For many GM vehicles of this era, a simple security relearn procedure may be necessary after installation. This can typically be done without special tools and involves a sequence of key turns. Instructions are widely available online or in service manuals for your specific model.