Is Your Trusted GM Truck or SUV Acting Up?
If your 1998-1999 Suburban, Tahoe, Yukon, or Pickup is suffering from stalling, a no-start condition, harsh shifting, or a persistent check engine light, a failing Powertrain Control Module (PCM) is often the culprit. This component is the brain of your vehicle, and when it fails, it can cause a host of frustrating and difficult-to-diagnose problems. Instead of spending a fortune at the dealership, get your vehicle back to its reliable self with this fully programmed, direct-replacement PCM.
Common Symptoms & Your Solution
A faulty engine computer can mimic many other issues. If you’re experiencing any of the following, this module is your definitive solution:
- Check Engine Light: Particularly for internal module error codes like P0601 or P0605.
- No-Start or Hard-Start: The engine cranks but won’t fire up, or takes a long time to start.
- Poor Performance: Noticeable loss of power, hesitation, or poor fuel economy.
- Erratic Shifting: The transmission may shift harshly, late, or not at all.
- Stalling: The engine may die unexpectedly while driving or at idle.
This isn’t just a replacement part; it’s a complete, ready-to-install solution. We take a genuine, used OEM module and flash it with the latest official GM software specifically for your vehicle’s VIN. This ensures that your 1999 Suburban 1500 PCM, or the module for your compatible GM truck, performs exactly as it should from the moment you install it.
Features & Benefits
- ✔ VIN-Specific Programming: We flash the module with your vehicle’s exact VIN, ensuring perfect compatibility with all its systems and options. No trip to the dealer is required for programming.
- ✔ Plug & Play Installation: Once you receive the module, installation is straightforward. In most cases, you will only need to perform a simple security relearn procedure, which can be done without special tools.
- ✔ Genuine OEM Part: This is an original equipment part, ensuring the same fit, quality, and durability you’d expect from the factory.
- ✔ Updated GM Software: Your module arrives with the newest software updates from General Motors, which can resolve factory bugs and improve overall vehicle operation.
- ✔ Cost-Effective Repair: Get a reliable, programmed module for a fraction of the cost of a new unit from a dealership.
- ✔ One-Year Replacement Coverage: This unit is backed by our one-year replacement warranty, giving you confidence in your purchase.
Expert Insight: The Heart of Your GMT400
The PCM in these late-90s GM trucks, often called the “Black Box” VCM, is a remarkably robust piece of hardware. However, after 20+ years of heat cycles and vibration, internal components like capacitors and solder joints can fail, leading to intermittent and confusing issues. Simply swapping in a junkyard computer without proper programming is a recipe for disaster—it won’t have the correct software for your engine, transmission, and options. By providing a professionally programmed 1999 Suburban 1500 PCM, we eliminate the guesswork and deliver a component that restores the vehicle’s original logic and performance, ensuring it runs reliably for years to come.
Frequently Asked Questions
What do I need to do after installing this PCM?
After installation, you will need to perform a security relearn procedure (also known as a Passlock or VATS relearn). This syncs the new computer to your vehicle’s anti-theft system. The procedure is simple, takes about 30 minutes, and can be done with just your ignition key—no special tools are needed. We include instructions to guide you.
How do I provide my Vehicle Identification Number (VIN)?
After you complete your purchase, simply send us a message with your 17-digit VIN. We cannot program and ship your module without it. Please double-check the VIN for accuracy before sending.
Is this a new computer?
No, this is a tested, genuine OEM computer that has been sourced from a salvaged vehicle. We thoroughly inspect each unit before programming it with the latest GM software for your specific VIN, ensuring it’s ready for reliable service.
My original part number isn’t 16266645. Will this still work?
Yes. This module is a direct replacement for a wide range of part numbers, including 09355699, 9355699, 16250279, and more. As long as your vehicle is on the compatibility list, our VIN programming ensures this 1999 Suburban 1500 PCM will function correctly in your truck, van, or SUV.
What does the one-year replacement 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. This covers the part itself but does not cover labor, diagnostics, or shipping costs.