Is your GM truck or van acting up? A vehicle that won’t start, shifts erratically, or has a persistent Check Engine Light can bring your work or family life to a grinding halt. The problem often points to a failing Powertrain Control Module (PCM), the electronic brain of your vehicle. This isn’t just a part; it’s the solution to getting your dependable vehicle back on the road. We offer a genuine, road-tested Programmed 16266645 PCM that arrives ready for a straightforward installation, saving you from costly dealership programming fees and extended downtime.
Common Symptoms & Your Solution
A faulty PCM can cause a wide range of frustrating issues. If you’re experiencing any of the following, this module is the definitive fix:
- Complete no-start or intermittent starting problems
- Harsh or unpredictable automatic transmission shifting
- Poor engine performance, hesitation, or stalling
- Reduced fuel economy
- Check Engine Light (CEL) with communication error codes (U-codes) or multiple false sensor codes
- Failure to pass an emissions test
Instead of guessing with expensive sensors or wiring repairs, address the core of the problem. This Programmed 16266645 PCM is meticulously flashed with the latest official GM software updates, tailored specifically to your vehicle’s Vehicle Identification Number (VIN). This ensures all systems communicate correctly for restored performance and reliability.
Features & Benefits
- ✔ VIN-Specific Programming Included: Your computer arrives ready to install. No extra trips to the dealer for expensive flashing services are required.
- ✔ Latest GM Software Updates: We flash the module with the most current calibrations from General Motors, ensuring optimal engine and transmission performance.
- ✔ Simple Installation Process: Designed for a direct fit. After installation, a simple security relearn procedure (often called a key-cycle relearn) is typically all that’s needed to get you running.
- ✔ Cost-Effective Solution: Get the reliability of an original equipment part without the high cost of a new unit from a dealership.
- ✔ Broad Compatibility: A single, reliable solution for a huge range of popular 1998-1999 GM work trucks, family SUVs, and commercial vans.
- ✔ Peace of Mind: This unit is backed by our one-year replacement warranty.
Expert Insight: The End of Guesswork
As a technician for over 20 years, I remember the days of swapping modules between trucks, hoping to find a match. It was a nightmare of incompatible software and endless troubleshooting. A modern, Programmed 16266645 PCM like this one changes the game. The fact that it’s flashed to your specific VIN before it even ships eliminates 99% of the compatibility headaches. It turns a potentially complex electronic repair into a manageable, bolt-in job that a skilled DIYer or any independent shop can handle with confidence. This is how you fix it right the first time.
Frequently Asked Questions
Is programming really included in the price?
Yes, absolutely. The price includes flashing the computer with the latest GM software using the VIN you provide. The module will arrive ready for installation in your specific vehicle.
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 ship the part until we receive this information, as it is essential for the programming process.
Will I need to do anything else after I install it?
In most cases, you will need to perform a simple security relearn procedure, also known as a VATS relearn or key-cycle relearn. This procedure syncs the new PCM with your vehicle’s anti-theft system and does not require any special tools. Instructions can be easily found online for your specific model.
Is this a new part?
No, this is a high-quality, used OEM computer that has been sourced from a salvaged vehicle, inspected, and then programmed to function as a reliable replacement for your original failed unit.
How can I be sure this fits my vehicle?
This PCM is compatible with the part numbers listed in the description (16266645, 09355699, etc.). Please check the extensive model list provided and verify that the service ID number on your current computer matches one of the compatible numbers to ensure a perfect fit.