Get Your Hard-Working Truck Back on the Road, Fast.
Is your trusty 1998-1999 GMC 3500 letting you down with baffling electrical issues, poor performance, or a persistent check engine light? A failing Powertrain Control Module (PCM) is often the culprit, leaving your reliable workhorse parked when you need it most. This isn’t just an inconvenience; it’s costing you time and money. We offer the definitive, hassle-free solution: a high-quality replacement 1998-1999 GMC 3500 PCM, professionally programmed to your truck’s specific Vehicle Identification Number (VIN).
Common Symptoms & Your Solution
If your truck is experiencing any of the following, a faulty engine computer is the likely cause:
- Erratic or harsh transmission shifting
- Unexplained stalling or a no-start condition
- Poor fuel economy and engine performance
- Check Engine Light with communication error codes (like P0601, P0605, P0606)
- Intermittent issues that mechanics can’t seem to diagnose
This module is the core of your vehicle’s engine and transmission management. Our professionally programmed unit restores communication between all critical systems, eliminating guesswork and getting you back to work with a truck that runs like it should. By providing us with your VIN, you receive a module that is a perfect electronic match for your vehicle’s specific configuration.
Features & Tangible Benefits
- โ Plug & Play Installation: Arrives pre-programmed to your vehicle’s VIN. No expensive trip to the dealership for flashing is required.
- โ Updated GM Software: We load the latest stable software updates from General Motors, which can solve factory bugs and improve performance and efficiency.
- โ Guaranteed Compatibility: This module is a direct replacement for part numbers 09355699, 16250279, and 09366810, ensuring a perfect fit for a wide range of GM trucks, vans, and SUVs.
- โ Restored Performance: Get back the smooth idle, crisp throttle response, and reliable shifting you depend on.
- โ Cost-Effective Solution: Avoid the high costs and wait times associated with dealership repairs. This is a smart, efficient fix for the savvy truck owner.
- โ Protected Purchase: This unit is backed by our one-year replacement warranty.
Expert Insight: The Critical Role of VIN Programming
For these late-90s GM trucks, the PCM is more than just an engine controller; it’s the central hub that manages everything from the anti-theft system (PassLock/VATS) to transmission shift points and emissions equipment. Simply installing a used module from another truck won’t workโit will trigger the security system and the vehicle won’t start. Our VIN-specific programming ensures the replacement 1998-1999 GMC 3500 PCM correctly recognizes your keys and is perfectly configured for your truck’s unique options, ensuring a seamless and successful repair every time.
Frequently Asked Questions
How do I provide my VIN number?
After you complete your purchase, you will receive instructions on how to send us your vehicle’s 17-digit VIN. We cannot program and ship your module until we receive this information.
Will I need to do any additional programming after installation?
No. This module is programmed to be a plug-and-play solution. However, on some GM vehicles of this era, a simple security relearn procedure may be required, which takes about 30 minutes and can be done without any special tools. We include easy-to-follow instructions for this process.
Is this a new or used part?
This is a quality, inspected component that has been tested and prepared for programming. It is guaranteed to function correctly and is a reliable alternative to sourcing a new, often unavailable, part from the dealer.
My original part number is 16250279. Will this work?
Yes. This module is a fully compatible replacement for part numbers 16250279, 09366810, and 09355699. As long as your vehicle is on the compatibility list, this unit will work perfectly once programmed to your VIN.
What if this doesn’t fix my problem?
While this 1998-1999 GMC 3500 PCM is the solution for a wide range of issues, we always recommend proper diagnostics to confirm the module is the fault. If you have any questions before ordering, please contact our team of experts. Your purchase is protected by our one-year replacement warranty for any module-related issues.