Is your trusty 1998-1999 GM truck, van, or SUV suddenly running rough, refusing to start, or showing a persistent check engine light? A failing Powertrain Control Module (PCM) is often the culprit, leaving you stranded and frustrated. Restore the heart of your vehicle’s electronics with this fully programmed, road-tested OEM PCM. This isn’t just a replacement part; it’s a complete, plug-and-play solution engineered to get you back on the road with confidence and minimal downtime.
Common Symptoms & Your Solution
A faulty engine computer can cause a cascade of confusing problems. If you’re experiencing issues like harsh or erratic shifting, poor fuel economy, a no-start condition with power to all other accessories, or engine stumbling, the PCM is the likely source. This unit is the definitive solution for Diagnostic Trouble Codes (DTCs) such as P0601 (Internal Control Module Memory Check Sum Error) or P0605 (Internal Control Module Read Only Memory (ROM) Error). Our Programmed 09355699 PCM arrives ready to solve these issues, pre-flashed with the latest GM software updates tailored specifically to your vehicle’s VIN.
- ✔ VIN-Programmed for Your Vehicle: We flash the module with your truck’s unique VIN, ensuring it communicates perfectly with the rest of your vehicle’s systems right out of the box. No expensive trip to the dealer is required.
- ✔ Restored Drivability: By installing a correctly functioning computer, you’ll restore crisp transmission shifts, smooth engine idle, and the dependable performance you rely on.
- ✔ Genuine OEM Reliability: This is a genuine, used OEM component sourced from a salvaged vehicle, offering the same durability and perfect fit as the original unit that came with your truck.
- ✔ Updated GM Software: Each module is loaded with the newest available updates from General Motors, which can resolve factory bugs and improve overall efficiency.
- ✔ Simple Plug-and-Play Installation: Simply disconnect your old module and plug this one in. It’s a straightforward job for any competent DIY mechanic.
- ✔ Purchase with Confidence: This unit is backed by our one-year replacement warranty.
An Expert’s Note on GM Electronics
In my 20+ years of diagnostics, I’ve seen countless owners of these classic GM trucks chase expensive sensor and wiring problems, only to find the core issue was the PCM itself. The electronics of this era are robust but can fail over time. The biggest hurdle for a DIYer has always been the required programming. Our service bridges that gap, providing a dealer-level solution directly to your door. By sending you a Programmed 09355699 PCM, we’re not just selling a part; we’re providing the key to getting your reliable workhorse back in service without the typical dealership hassle and expense.
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). We cannot program or ship your module without it. This ensures the PCM is a perfect match for your vehicle’s specific options and systems.
Is this a new part?
No, this is a high-quality, used OEM computer that has been carefully removed from a salvaged vehicle. We thoroughly inspect and test each unit to ensure it is fully functional before programming and shipping it to you.
Will I need to do anything after I install it?
In most cases, this is a direct plug-and-play installation. However, on some vehicles, a security relearn procedure (often called CASE relearn or Passlock relearn) may be necessary. This is a simple procedure that can typically be done without special tools and instructions can be easily found online for your specific model.
How do I know if this fits my vehicle?
This Programmed 09355699 PCM is a direct replacement for multiple part numbers, including 09366810. Please review the detailed fitment list on this page. The most important step is to match the service number (ID) from your original computer to one of the numbers listed to guarantee compatibility.
What does the warranty cover?
This unit is backed by our one-year replacement warranty. If the module fails within one year of the purchase date, we will provide a replacement unit.