Is your work van or family SUV letting you down?
A failing Powertrain Control Module (PCM) can bring your dependable GM truck or van to a grinding halt. If you’re dealing with frustrating issues like a no-start condition, erratic transmission shifting, poor fuel economy, or a persistent Check Engine Light, the problem often points directly to the vehicle’s brain. Don’t let a faulty computer keep you off the road and out of work. This fully programmed PCM is the reliable, straightforward solution to get your vehicle running right again.
Common Symptoms of a Failing GM PCM & Your Solution
When the PCM begins to fail, it can cause a wide range of confusing problems. You might be experiencing one or more of the following:
- Vehicle will not start, or starts and immediately stalls
- Harsh or unpredictable automatic transmission shifting
- A significant drop in fuel mileage
- Check Engine Light is on with communication error codes (U-codes) or driver circuit faults
- Engine misfires, stumbles, or runs rough
This unit is the definitive fix for these issues. We take a genuine, road-tested OEM computer and flash it with the latest official GM software updates specifically for your vehicle. By providing your Vehicle Identification Number (VIN) during checkout, you receive a module that is a direct, plug-and-play replacement, restoring the performance and reliability you depend on. This is a critical step to ensure your Programmed 1999 GMC Savana 3500 PCM works perfectly from the moment you install it.
Features & Benefits
- ✔ VIN-Programmed for Your Vehicle: We flash this module with your truck’s specific VIN, ensuring it communicates perfectly with your engine, transmission, and all factory options.
- ✔ True Plug-and-Play Installation: Because it’s pre-programmed, you can avoid a costly trip to the dealership. In most cases, installation is as simple as swapping the modules and performing a quick security relearn.
- ✔ Updated GM Software: Your PCM will arrive with the newest calibrations from General Motors, which can resolve factory bugs and improve drivability and efficiency.
- ✔ Genuine OEM Quality: Sourced from a salvaged vehicle, this is an original factory part, not a low-quality aftermarket alternative. It’s built to meet GM’s rigorous standards for durability and performance.
- ✔ Cost-Effective Repair: Get your truck or van back in service without the high cost of a brand-new computer from a dealer.
- ✔ This unit is backed by our one-year replacement warranty.
Expert Insight: The Critical Role of VIN Programming
Many people assume you can just pull a computer from another truck at a salvage yard and plug it in. With modern vehicles, that’s a recipe for disaster. The PCM is the central hub that manages everything from fuel injection to transmission shift points and the anti-theft system (VATS/Passlock). Flashing the unit with your specific VIN doesn’t just make it compatible; it makes it your vehicle’s computer. This process ensures the anti-theft system recognizes your keys, the transmission shifts correctly for your specific axle ratio, and the engine runs on the right fuel maps. Skipping this step is the #1 cause of failed repairs and endless troubleshooting. We handle this essential service for you, so your Programmed 1999 GMC Savana 3500 PCM is ready to go right out of the box.
Getting your vehicle back to its reliable self shouldn’t be a complicated process. This solution is designed for hard-working vehicle owners, fleet managers, and DIY mechanics who need a dependable part that works the first time. By installing this Programmed 1999 GMC Savana 3500 PCM, you’re not just replacing a part; you’re restoring your confidence in your vehicle.
Frequently Asked Questions
How do I provide my VIN?
After you complete your purchase, you will receive instructions to send us your 17-digit Vehicle Identification Number (VIN). We cannot program and ship the module without it.
Is any additional programming required after installation?
No. This PCM is shipped fully programmed to your VIN. The only step you may need to perform is a security relearn procedure, which syncs the module to your vehicle’s anti-theft system. This procedure does not require special tools and can be easily found online or in a repair manual.
How can I be sure this PCM will fit my vehicle?
Please check the extensive fitment list on this page and match your original part number to the list of compatible numbers (09355699, 16266645, etc.). Programming to your VIN provides the final layer of compatibility, ensuring it works correctly for your specific make, model, and options.
What is the security relearn procedure?
For most GM vehicles of this era, the security relearn involves a simple sequence of turning the key to the ‘ON’ position for 10-15 minutes, then ‘OFF’, and repeating this cycle three times. This allows the new PCM to recognize your vehicle’s keys. Specific instructions for your model are widely available online.
Where is the PCM located on my truck or van?
On most 1998-1999 GM full-size trucks, SUVs, and vans, the PCM is located in the engine compartment, typically on the driver’s side inner fender or near the battery.
Is this a new part?
No, this is a used, genuine OEM computer that has been carefully removed from a salvaged vehicle. It has been tested and is ready to be programmed for its next life in your vehicle.