Restore Your Truck’s Dependability
Is your trusted GMC 2500 suddenly running rough, refusing to start, or throwing confusing check engine lights? A failing Powertrain Control Module (PCM) can bring even the toughest truck to a standstill, causing immense frustration and costing you valuable time. This isn’t just an inconvenience; it’s a disruption to your work and your daily life. It’s time for a reliable, straightforward solution that gets you back on the road with confidence. This genuine OEM engine computer is the brain of your vehicle, and we provide it fully programmed to your truck’s specific VIN, ensuring a seamless restoration of performance and reliability.
Common Symptoms & Your Solution
If you’re experiencing any of the issues below, a faulty PCM is the most likely culprit. This VIN-programmed 1999 GMC 2500 PCM 09366810 is the definitive solution to correct these problems and restore the smooth, powerful operation you depend on.
- Erratic or harsh transmission shifting
- Sudden stalling or difficulty starting
- Poor fuel economy and loss of power
- Check Engine Light with codes like P0601, P0604, or P0606 (Internal Control Module Failure)
- Communication errors with diagnostic scan tools
- Misfire codes that persist after replacing plugs, wires, and coils
Features & Tangible Benefits
- ✔ Programmed to Your VIN: We flash this computer with the latest GM software updates matched exactly to your vehicle. This eliminates the need for expensive dealership programming, making for a true plug-and-play installation.
- ✔ Genuine OEM Hardware: Sourced from a salvaged vehicle, this is an original factory part, not a questionable aftermarket clone. This ensures perfect compatibility with your truck’s wiring and sensors for flawless operation.
- ✔ Cost-Effective Repair: Get a fully functional, programmed module at a fraction of the cost of a new unit from a dealer, keeping your classic truck running without breaking the bank.
- ✔ No Core Charge: You won’t have to worry about the hassle and extra cost of sending your old, failed computer back to us.
- ✔ This unit is backed by our one-year replacement warranty. You can install this part with the peace of mind that you’re covered.
Expert Insight from a 20-Year Tech
I’ve worked on hundreds of these GMT400 trucks. Their Vortec engines are legendary for a reason—they’re tough. But the electronics of that era are their Achilles’ heel. Heat cycles and vibrations eventually cause the solder joints and components on the PCM’s circuit board to fail. You’ll chase phantom misfires and transmission issues for weeks, but the problem is often the computer itself. Installing a properly programmed 1999 GMC 2500 PCM 09366810 isn’t just replacing a part; it’s giving that bulletproof engine the stable, reliable brain it needs to keep working hard for another hundred thousand miles. It’s the smartest fix you can make.
This module is a direct fit for a wide range of GM trucks, vans, and SUVs. It replaces part numbers 09355699, 16266645, 16250279, 16258815, and 09366810. Please provide your VIN upon purchase so we can program the unit before shipping, ensuring your truck is back up and running as quickly as possible. Don’t let a bad computer sideline your vehicle. Order your pre-programmed 1999 GMC 2500 PCM 09366810 today and get the job done right.
Frequently Asked Questions
Do I need to do anything after I install this PCM?
In most cases, you will need to perform a security relearn procedure, which can typically be done without special tools and takes about 30 minutes. Some vehicles may also require a Crankshaft Variation Relearn (CASE relearn), which requires a capable scan tool to complete. This is necessary to prevent a P1336 trouble code.
How do I provide my VIN number?
After you complete your purchase, you can send us a message with your 17-digit Vehicle Identification Number (VIN). We cannot ship your part until we receive the VIN, as the programming is essential for the part to function in your truck.
Is this a new part?
No, this is a tested, genuine OEM part that was carefully recovered from a salvaged vehicle. We inspect and verify the hardware before programming it with fresh, updated software to ensure it performs reliably.
Will this fix my transmission shifting problems?
The PCM controls both the engine and the transmission. If your shifting problems are electronic in nature (caused by faulty signals or processing), this module is very likely to solve them. It will not fix internal mechanical failures within the transmission itself.
What does the one-year replacement warranty cover?
Our one-year replacement warranty covers the module itself against any programming or internal electronic failures for a full year from the date of purchase. If the unit fails within that period, we will provide a replacement.
Which part number will I receive?
You will receive a module with a part number from the compatible list (e.g., 09355699, 16266645, 09366810, etc.). While the sticker may show a different number, we guarantee the hardware is identical and fully compatible, and it will be programmed to function perfectly for your vehicle’s VIN.