Get Your Truck Back on the Road, Fast.
Is your Chevrolet 3500 letting you down? If you’re dealing with frustrating starting issues, stalling, erratic engine behavior, or a persistent check engine light, a failing Powertrain Control Module (PCM) is often the culprit. This isn’t just an inconvenience; it’s downtime that costs you time and money. This replacement PCM is the reliable, straightforward solution to restore your truck’s performance and get you back to work with confidence.
Common Symptoms & Your Solution
A faulty PCM can cause a wide range of problems that can be difficult to diagnose. If your truck is experiencing any of the following, this module is your definitive fix:
- No-Start or Hard Starting: The engine cranks but refuses to fire up, or takes an excessively long time to start.
- Engine Stalling: The engine cuts out unexpectedly while driving or idling.
- Poor Performance & Fuel Economy: You’ve noticed a significant drop in power, hesitation during acceleration, and your truck is burning through more fuel than usual.
- Harsh or Incorrect Shifting: Your automatic transmission is shifting erratically, late, or slamming into gear.
- Check Engine Light (CEL): You may see diagnostic trouble codes (DTCs) like P0601, P0605, or P0606, indicating an internal module failure.
This meticulously prepared 1998-1999 Chevrolet 3500 PCM 9355699 is programmed to your vehicle’s specific Vehicle Identification Number (VIN), ensuring it works seamlessly with your engine, transmission, and all related systems right out of the box.
Expert Insight: The Critical Role of VIN Programming
On these late-90s GM trucks, the PCM is more than just an engine controller; it’s the central command center. Simply swapping a module from another vehicle won’t work correctly. VIN-specific programming is essential because it loads the exact software and calibrations for your truck’s unique configuration—including engine size, transmission type, gear ratios, and even tire size. This process ensures proper communication with the anti-theft system (Passlock/VATS), preventing a no-start condition, and guarantees that your transmission shifts precisely as the factory intended. We handle this complex process for you, delivering a true plug-and-play part.
Features & Benefits
- ✔ VIN-Programmed for Your Truck: We flash the module with the latest GM software updates using your VIN. This eliminates the need for expensive dealership programming and ensures perfect compatibility.
- ✔ Restores Factory Performance: Resolves common issues like stalling, rough idling, and poor fuel mileage, bringing back the dependable power you rely on.
- ✔ Simple Installation: Designed for a direct, hassle-free installation. Once you receive the module, you can install it without the need for special tools or procedures.
- ✔ Cost-Effective Solution: Get a reliable, tested component without the high cost of a new dealership part. This is a smart repair for a workhorse truck.
- ✔ Peace of Mind: This unit is backed by our one-year replacement warranty.
Don’t let a bad computer keep your truck sidelined. Order this programmed 1998-1999 Chevrolet 3500 PCM 9355699 and get the job done right.
Frequently Asked Questions
How do I provide my VIN?
After you complete your purchase, simply send us a message with your vehicle’s 17-digit VIN. We cannot ship your part until we receive this information, as the programming is specific to your truck.
Is this a new part?
No, this is a high-quality, used OEM part that has been sourced from a salvaged vehicle. Each unit is thoroughly inspected and tested to ensure full functionality before being programmed and shipped to you.
Will I need to do any additional programming after installation?
No. Because we program the PCM to your specific VIN before shipping, it is ready to be installed. In most cases, no further action is required. Some vehicles may require a simple security relearn procedure, which can be done without any special tools and typically takes 10-15 minutes. We can provide instructions if needed.
Where is the PCM located on my truck?
On most 1998-1999 Chevrolet 3500 pickups and related GM models, the PCM is located in the engine compartment, typically on the driver’s side inner fender or near the firewall.
Does this part fit other vehicles?
Yes, this PCM with service number 9355699 fits a wide variety of GM trucks, vans, and SUVs from that era, including the Suburban, Tahoe, Yukon, Express, Savana, and more. Please check the detailed fitment list on this page to confirm it is correct for your specific model and engine.