Get Your Dependable Truck Back on the Road
Is your trusty GMC 2500 suddenly running rough, refusing to start, or throwing a cascade of confusing check engine lights? A failing Powertrain Control Module (PCM) can bring your workhorse to a grinding halt, causing immense frustration and costly downtime. This isn’t just an inconvenience; it’s a roadblock. We provide the reliable, straightforward solution to get you back behind the wheel with confidence. This genuine OEM engine computer, service number 16250279, is professionally programmed to your truck’s specific VIN, ensuring you get the right part, ready for installation.
Common Symptoms & Your Solution
If you’re experiencing any of the issues below, a faulty PCM is the most likely culprit. This unit is the definitive fix for:
- Complete no-start or intermittent starting issues
- Rough idling or stalling
- Harsh or erratic automatic transmission shifting
- A dramatic decrease in fuel economy
- Check Engine Light (CEL) with communication error codes (U-codes)
- False sensor codes that persist even after replacing the sensor
Features & Benefits
This isn’t just a replacement part; it’s a comprehensive solution designed to restore your vehicle’s factory performance and reliability. Here’s what you get:
- ✔ VIN-Programmed for Your Truck: We flash the unit with the latest GM software updates using your vehicle’s unique VIN. This eliminates the need for an expensive trip to the dealership for programming.
- ✔ Restored Drivability: By installing a correctly functioning brain, you’ll restore the smooth engine performance and crisp transmission shifts your truck was built for.
- ✔ Cost-Effective Repair: Get a reliable, tested OEM computer at a fraction of the cost of a new unit, which is often no longer available for these classic trucks.
- ✔ Proven OEM Reliability: This is a genuine factory component from a salvaged vehicle, tested for full functionality. It’s the same quality part your truck was built with, not a failure-prone aftermarket clone.
- ✔ Peace of Mind Protection: This unit is backed by our one-year replacement warranty. Drive with confidence knowing your purchase is protected.
Expert Insight: The OEM Advantage
As a technician with over two decades of experience, I’ve seen countless issues arise from cheap, aftermarket electronics. For a critical component like the PCM in a GMT400-era truck, nothing beats the durability of the original equipment. These trucks were built to last, and so were their electronics. Our process involves sourcing good, functional OEM units and loading them with the most current, stable software from GM for your specific VIN. This ensures perfect communication between the engine, transmission, and all other modules, solving the problem correctly the first time. You’re not just buying a part; you’re buying a proven, reliable fix for your 1999 GMC 2500 PCM 16250279.
Frequently Asked Questions
What exactly does a PCM do?
The Powertrain Control Module (PCM) is the central computer of your vehicle. It controls all aspects of engine and transmission operation, from fuel injection and ignition timing to emission controls and automatic shift points, ensuring optimal performance and efficiency.
Will I need to do anything after I install it?
Because this unit is programmed to your VIN, it is ready for installation. However, on many GM vehicles of this era, you may need to perform a simple security relearn procedure, also known as the Passlock or VATS relearn. This procedure can be done yourself in about 30 minutes with no special tools and ensures the new PCM communicates with your vehicle’s anti-theft system.
How do I provide my VIN?
After you complete your purchase, simply send us a message with your 17-digit Vehicle Identification Number (VIN). We cannot program and ship your 1999 GMC 2500 PCM 16250279 until we receive this information.
Is this a new part?
No, this is a fully tested, genuine OEM computer sourced from a salvaged vehicle. We guarantee its functionality and back it with a solid warranty, providing a reliable and affordable alternative to sourcing a new, often unavailable, part.
How can I be sure this fits my truck?
This PCM fits a wide range of GM trucks, vans, and SUVs from 1998-1999. Please check the detailed fitment list on this page. The most crucial step is providing us with your VIN, as this allows us to program the module with the exact software your specific vehicle configuration requires.