Restore Peak Performance to Your GM Truck or Van
Is your 1998-1999 GMC 2500, Chevrolet pickup, or GM van experiencing frustrating issues like a persistent check engine light, rough idling, stalling, or a no-start condition? These are classic signs of a failing Powertrain Control Module (PCM). This vital component is the brain of your vehicle, managing everything from fuel injection and ignition timing to transmission shifting. When it fails, your truck’s reliability and performance suffer. This genuine used OEM PCM, part number 16250279, is the definitive solution to get your vehicle running correctly again.
From the Diagnostic Bay
We had a ’99 Chevy Suburban come in that had its owner completely stumped. The truck would randomly die at stoplights, the transmission would shift erratically, and the check engine light was on with a dozen different codes that didn’t seem related. The owner had already replaced the fuel pump and multiple sensors with no luck. After hooking up our professional scan tool, we noticed the data stream from the PCM was dropping out intermittently. We knew right away the computer itself was the culprit. We installed a VIN-programmed PCM just like this one, and the truck immediately ran like new. It’s a reminder that sometimes the most complex-seeming problems have a single, straightforward solution.
Symptoms of a Failing 1998-1999 GMC 2500 PCM
A faulty PCM can manifest in numerous ways, often mimicking other component failures. If you’re experiencing any of the following, your engine computer may be the root cause:
- ✔ Persistent Check Engine Light (CEL) with various trouble codes.
- ✔ Engine stalling or shutting off unexpectedly.
- ✔ Rough or inconsistent engine idle.
- ✔ Noticeable decrease in fuel economy.
- ✔ Harsh or erratic automatic transmission shifting.
- ✔ Complete no-start condition where the engine cranks but won’t fire.
- ✔ Failure to communicate with diagnostic scan tools.
Plug-and-Play Installation: Programmed to Your VIN
The biggest challenge when replacing a modern vehicle computer is the programming. This isn’t a part you can simply swap from another vehicle. Our service eliminates that headache. When you purchase this 1998-1999 GMC 2500 PCM, we will flash it with the latest GM software updates specifically calibrated to your vehicle’s Vehicle Identification Number (VIN). This ensures perfect compatibility with your truck’s engine, transmission, and options. Once you receive it, installation is as simple as disconnecting the battery, swapping the modules, and reconnecting the battery. No expensive trips to the dealership for programming are required.
This module is a direct replacement for a wide range of GM trucks and vans from the era, and is compatible with multiple service numbers, including: 09355699, 16266645, 9355699, 16250279, 16258815, 09366810, and 9366810. Please verify your part number or use the fitment list to confirm compatibility.
What is a PCM and what does it do?
The Powertrain Control Module (PCM) is your vehicle’s main computer. It controls all aspects of the engine and transmission to ensure optimal performance, fuel efficiency, and emissions. It takes data from sensors all over the vehicle and makes real-time adjustments to fuel delivery, spark timing, and shift points.
Is this module ready to install when I receive it?
Yes! This is a key benefit of our service. We program the module with your vehicle’s specific VIN before shipping. This makes the unit fully compatible and ready for a straightforward, plug-and-play installation without needing any additional programming.
How do I provide my VIN for programming?
After you complete your purchase, simply send us a message with your 17-digit Vehicle Identification Number (VIN). We cannot ship the part until we have this information to ensure it is programmed correctly for your truck or van.
Will this fix my check engine light?
If the check engine light is caused by a faulty PCM, then yes, this part will resolve the issue. However, it’s crucial to ensure you have properly diagnosed the problem. This module will not fix issues caused by other faulty sensors or mechanical problems.
What other part numbers is this compatible with?
This PCM, service number 16250279, is also a direct replacement for part numbers 09355699, 16266645, 9355699, 16258815, 09366810, and 9366810, ensuring broad compatibility across many GM models.