Restore Peak Performance to Your GM Truck or Van
Is your 1998 or 1999 GMC Yukon, Tahoe, Suburban, or another compatible GM vehicle experiencing perplexing issues like stalling, rough idling, poor fuel mileage, or a persistent check engine light? These are classic signs of a failing Powertrain Control Module (PCM). As the central computer for your engine and transmission, a faulty PCM can disrupt nearly every aspect of your vehicle’s operation. This direct-replacement, used engine computer, part number 09366810, is the reliable and cost-effective solution to get your truck back on the road and running smoothly.
The Plug-and-Play Solution: Programmed to Your VIN
Don’t waste time and money on a trip to the dealership for expensive programming. We handle the critical first step for you. Before this module ships, we will flash it with the latest official GM software updates tailored specifically to your vehicle’s 17-digit Vehicle Identification Number (VIN). This ensures that the computer is ready to communicate seamlessly with your truck’s existing systems, including the ignition, fuel injectors, and transmission, right out of the box. This process makes installation straightforward, saving you from the hassle of needing specialized scan tools for setup.
From the Diagnostic Bay
I once had a ’99 Suburban towed in with a classic ‘bad PCM’ complaint: no-start, no communication with the scan tool. The customer had already bought a module from another supplier. Before installing it, I did a quick check of the basics. Turns out, a single corroded ground wire on the engine block was the culprit. A new ground strap and 15 minutes of work fixed the entire problem. Always check your main power and ground connections to the PCM before replacing it!
Diagnosing a Faulty 1998-1999 Yukon PCM
A failing PCM can manifest in numerous ways, often mimicking other component failures. If you’ve already checked your sensors, wiring, and fuel system, it’s time to consider the main computer. This module is the key to resolving those hard-to-diagnose electronic gremlins that have been plaguing your vehicle.
Common Symptoms of a Failing PCM
- ✔ Unexplained Check Engine Light that may come and go
- ✔ Engine stalling, misfiring, or running rough
- ✔ A noticeable decrease in fuel economy
- ✔ Harsh, erratic, or delayed automatic transmission shifting
- ✔ Complete no-start condition where the engine cranks but won’t fire
- ✔ Failure of a diagnostic scan tool to communicate with the module
- ✔ Inaccurate or non-functional dashboard gauges
This unit is a guaranteed functional, used OEM part. It has been carefully inspected and is ready to provide years of reliable service. By choosing this module, you are getting a quality-tested component that restores original factory performance without the high cost of a new part. Please provide your VIN upon purchase to ensure we can program and ship your order without delay.
Frequently Asked Questions
What do you mean by “programmed to my VIN”?
We use your 17-digit Vehicle Identification Number (VIN) to load the exact, correct GM factory software for your truck’s specific engine, transmission, and options. This ensures the module works correctly with all the other electronics in your vehicle, making for a much simpler installation.
Do I need to do anything after installing this PCM?
While our programming makes this a plug-and-play part for most vehicles, some may require a security relearn (Passlock/VATS) or a Crankshaft Variation Relearn (CASE learn) to extinguish a check engine light. These procedures can often be performed without special tools, and instructions are widely available online or in service manuals.
Is this a new part?
No, this is a genuine OEM part sourced from a salvaged vehicle. Each unit is thoroughly inspected and tested to ensure full functionality before being programmed and shipped. This offers a reliable and affordable alternative to a brand-new module from a dealer.
Where do I provide my VIN?
Please enter your 17-digit VIN in the notes section during the checkout process. If you forget, you can also send it to us in a message after completing your purchase. We must have your VIN to program the module before we can ship it.
Will this fit my vehicle?
This PCM fits a wide range of 1998-1999 GM trucks and vans. It directly replaces part numbers 09355699, 16266645, 9355699, 16250279, 16258815, and 09366810. Please review the detailed fitment list on this page to confirm compatibility with your specific model and engine.