Get Your Dependable Truck Back on the Road
Is your GMC 2500, or another trusted GM truck, suddenly unreliable? A failing Powertrain Control Module (PCM) can bring your workhorse to a grinding halt, causing immense frustration and costly downtime. Symptoms like a no-start condition, erratic engine behavior, or a persistent check engine light can often be traced back to a faulty engine computer. This isn’t just an inconvenience; it’s a critical failure that compromises your vehicle’s performance and dependability. We provide the definitive, hassle-free solution to get you back to work and on the road with confidence.
Common Symptoms & Your Solution
If you’re experiencing any of the following issues, a failing PCM is the likely culprit. This unit is the direct solution for:
- Complete no-start or intermittent starting problems
- Rough or unstable idling
- Poor fuel economy and loss of power
- Erratic or harsh transmission shifting
- Check Engine Light with communication error codes (like P0601, P0605)
- Instrument cluster warning lights behaving strangely
Instead of wrestling with a complex diagnosis or paying steep dealership prices, this pre-programmed 1999 GMC 2500 PCM arrives ready for installation. We take the guesswork out of the repair, providing a reliable part that restores your truck’s original performance and functionality.
Features & Tangible Benefits
- ✔ VIN-Specific Programming: We flash this computer with the latest GM software updates using your truck’s unique VIN. This ensures perfect communication between components and optimal performance, eliminating the need for an expensive trip to the dealer for programming.
- ✔ Plug & Drive Installation: Because the unit is pre-programmed for your vehicle, installation is straightforward. In most cases, you simply disconnect the battery, swap the modules, and reconnect. No complex setup required.
- ✔ Restored Factory Performance: By correcting engine and transmission control functions, this PCM will restore the smooth operation, power, and efficiency you depend on from your GM truck.
- ✔ Cost-Effective Solution: Get a genuine, reliable OEM computer at a fraction of the cost of a new unit from the dealership. This is a smart, practical repair for a hard-working vehicle.
- ✔ Guaranteed Compatibility: This module is a direct replacement for multiple part numbers, including 16266645 and 09355699. Please check the extensive fitment list to confirm it’s the right part for your truck, van, or SUV.
- ✔ Purchase with Confidence: This unit is backed by our one-year replacement warranty.
Expert Insight: The Heart of Your Vortec Engine
The PCM in these late-90s GM trucks is more than just a computer; it’s the central command for your entire powertrain. It precisely controls fuel injection, ignition timing, transmission shift points, and dozens of other critical parameters. When it fails, the symptoms can be confusing and mimic other problems. Our process of programming this 1999 GMC 2500 PCM to your specific VIN is what makes this a true solution. It ensures the computer knows every detail about your vehicle’s original configuration—from its engine size to its axle ratio—restoring the seamless integration that made these trucks legendary for their reliability.
Frequently Asked Questions
What is a PCM and what does it do?
The Powertrain Control Module (PCM), often called the engine or truck computer, is the electronic brain of your vehicle. It controls all aspects of the engine and transmission to ensure optimal performance, fuel efficiency, and emissions.
How do I provide my VIN for programming?
After you complete your purchase, you will need to send us your 17-digit Vehicle Identification Number (VIN). We will provide clear instructions on how to do this. We cannot ship your part until we receive your VIN, as the programming is essential for the part to work correctly in your vehicle.
Is any additional programming required after installation?
In most cases, no. This 1999 GMC 2500 PCM is designed to be a plug-and-drive solution. However, some vehicles may require a security relearn procedure (often called CASE relearn or anti-theft relearn), which is a simple process that can typically be done without special tools. Instructions can be readily found for your specific model.
Is this a new part?
No, this is a high-quality, used OEM computer that has been carefully inspected and sourced from a salvaged vehicle. It is then professionally programmed to ensure it functions correctly.
What if my original part number isn’t on the list?
Please double-check the provided list of compatible part numbers. If your number is not listed, this module may not be correct for your vehicle. Contact us with your vehicle information and original part number if you need assistance confirming compatibility.