Restore Peak Performance to Your GM Truck or SUV
Is your 1998-1999 GMC Yukon, Chevy Tahoe, Suburban, or other compatible GM vehicle suffering from perplexing engine issues? A faulty Powertrain Control Module (PCM) is often the culprit behind problems like a persistent check engine light, poor fuel economy, stalling, or a no-start condition. This genuine used PCM, part number 9355699, is the reliable and cost-effective solution to get your vehicle running smoothly again. As the central computer for your engine, the PCM controls critical functions like fuel injection, spark timing, and transmission shifting. When it fails, the entire system can become erratic and unreliable.
From the Diagnostic Bay
I once had a 1999 Chevy Suburban in the shop that was driving the owner crazy. It would randomly stall at red lights and had a check engine light that multiple shops couldn’t fix. They had replaced the throttle position sensor, the idle air control valve, and even the fuel pump. After hooking up my scan tool, I noticed the live data stream for several sensors was freezing intermittently—a classic sign of a failing computer, not a bad sensor. We installed a VIN-programmed PCM just like this one, and the truck ran perfectly. It’s a reminder that the issue isn’t always the sensor, but the brain reading it.
The Solution: A VIN-Programmed 1998-1999 Yukon PCM
Don’t settle for a generic, unprogrammed module that requires an expensive trip to the dealership for flashing. We take the hassle out of the repair. When you purchase this module, you simply provide us with your vehicle’s VIN. Our technicians will then program the unit with the latest GM factory software specific to your truck or van. This ensures that it communicates perfectly with your vehicle’s existing systems, making installation straightforward. This is a direct-fit replacement, designed to restore the original performance and reliability you expect from your vehicle.
Common Symptoms of a Failing PCM
- ✔ Persistent Check Engine Light (CEL)
- ✔ Engine stalling or stumbling unexpectedly
- ✔ Rough or inconsistent idling
- ✔ Difficulty starting the engine or a complete no-start condition
- ✔ Poor fuel economy
- ✔ Hesitation or poor acceleration
- ✔ Transmission shifting issues or harsh shifts
- ✔ Communication error codes (U-codes) on a scan tool
Guaranteed Compatibility
This Electronic Control Module is a direct replacement for several part numbers, ensuring wide compatibility across the GM truck and van lineup from this era. This unit will fit vehicles requiring part numbers: 09355699, 16266645, 16250279, 16258815, 09366810, and 9366810. Please verify your vehicle’s fitment using the detailed list below to ensure a perfect match.
This part will fit these makes and models with these options:
This module is compatible with a wide range of GM vehicles, including the Chevrolet 1500/2500/3500 Pickups, Express Vans, Suburban, Tahoe, S10, Blazer; GMC 1500/2500/3500 Pickups, Savana Vans, Yukon, Safari, Jimmy, Sonoma; as well as the Cadillac Escalade, Oldsmobile Bravada, Isuzu Hombre, and more from 1998-1999. Please ensure your vehicle’s original module carries the ID 9355699 for guaranteed compatibility.
Frequently Asked Questions
What is a PCM and what does it do?
The Powertrain Control Module (PCM), also known as the Engine Control Module (ECM), is your vehicle’s main computer. It controls all aspects of engine and transmission operation to ensure optimal performance, fuel efficiency, and emissions.
Is this part ready to install?
Yes! This PCM is programmed to your vehicle’s specific VIN before shipping. This makes it a plug-and-play solution, eliminating the need for a trip to the dealer for programming.
Do I need to perform any other procedures after installation?
In many cases, no. However, some GM vehicles of this era may require a simple security relearn procedure (often called a CASE relearn or Passlock relearn) to sync the new PCM with your vehicle’s anti-theft system. This procedure can typically be done without special tools and instructions are widely available online.
How do I provide my VIN?
After you complete your purchase, you will need to send us your 17-digit Vehicle Identification Number (VIN). We cannot ship your part until we receive this information, as it is essential for correct programming.
Is this a new part?
No, this is a high-quality, tested, genuine used part sourced from a salvaged vehicle. Each unit is inspected and programmed to ensure it functions correctly, offering a reliable repair at a fraction of the cost of a new module.