Restore Peak Performance to Your GM Truck or Van
Is your 1999-2000 Chevrolet Tahoe, Suburban, or another compatible GM vehicle suffering from frustrating issues like a persistent check engine light, poor fuel economy, erratic shifting, or even a no-start condition? These are classic symptoms of a failing Powertrain Control Module (PCM), the central computer responsible for managing your engine and transmission. A faulty PCM can disrupt countless vehicle functions, making your reliable truck feel unpredictable. This replacement PCM is the definitive solution to restore your vehicle’s original performance and drivability.
This isn’t just a generic part off a shelf. We provide a comprehensive service that ensures a seamless repair. Upon purchase, you simply provide us with your vehicle’s 17-digit VIN. Our technicians will then program the module with the latest, most up-to-date factory software directly from GM. This VIN-specific programming ensures the PCM is perfectly matched to your vehicle’s engine, transmission, and factory options, eliminating the need for an expensive trip to the dealership for programming.
We had a 1999 GMC Yukon come into the shop with a ghost of a problem. The owner said it would randomly stall at stoplights, but never threw a consistent code. We checked the fuel pressure, ignition system, and all the usual sensors—everything looked fine. On a hunch, we monitored the PCM’s data stream and noticed the processor would occasionally drop communication for a split second, just long enough to cause a stall but not always long enough to set a fault code. We swapped in a VIN-programmed PCM, and the problem vanished instantly. It’s a reminder that when everything else checks out, the vehicle’s brain is often the culprit.
Is Your Vehicle Showing These Symptoms of PCM Failure?
- ✔ Persistent Check Engine Light (CEL) that won’t go away.
- ✔ Error codes related to sensors, emissions, or internal module failure.
- ✔ Rough or unstable engine idle.
- ✔ Noticeable decrease in fuel mileage.
- ✔ Harsh, delayed, or incorrect automatic transmission shifting.
- ✔ The engine cranks but refuses to start.
- ✔ Failure to pass state emissions inspections.
- ✔ Intermittent stalling or hesitation during acceleration.
The Direct-Fit Solution: A Pre-Programmed 1999-2000 Tahoe PCM
Replacing the PCM on these classic GM trucks and vans is often the key to solving complex electronic issues. Our process is designed to be as simple as possible for you. By programming the module before it ships, we eliminate the most complicated step of the repair. The module arrives at your door ready for installation. In most cases, the physical installation is straightforward, involving disconnecting the battery, unplugging the old module’s wiring harnesses, unbolting it, and installing the new one in its place. After installation, you may need to perform a simple security relearn procedure, which can typically be done without special tools and takes about 30 minutes.
This module is a direct replacement for multiple OEM part numbers, including 16263494, 16265035, and 8162634940. Its compatibility extends far beyond the Tahoe, fitting a wide range of popular GM models from the era, such as the Chevrolet Silverado, GMC Sierra, Express/Savana vans, S10/Sonoma, and Cadillac Escalade. Please verify the part number and check the detailed fitment list to ensure this is the correct module for your specific vehicle.
Frequently Asked Questions
Do I need to get this PCM programmed by a dealer?
No. We handle all the programming for you before we ship the part. Simply provide your vehicle’s VIN during or after checkout, and it will arrive ready to install.
What is a VIN and why do you need it?
The VIN is your vehicle’s unique 17-digit identification number. We use it to access the exact GM factory software for your truck’s specific engine, transmission, and options, ensuring perfect compatibility.
Is this part difficult to install?
The physical replacement is typically very simple, requiring basic hand tools to unbolt the old module and install the new one. After installation, a security relearn procedure may be required, which involves a sequence of key turns. Instructions for this are widely available online.
Will this fix my check engine light?
If the check engine light is caused by a faulty PCM, this part will resolve the issue. However, if the light is on due to other failing components (like an oxygen sensor or catalytic converter), those issues will still need to be addressed separately.
Which part numbers does this module replace?
This module is a direct replacement for several part numbers, including 16263494, 16265035, 8162634940, and 218-11787.