Is your truck or SUV running rough, stalling, or refusing to start?
A failing Powertrain Control Module (PCM) can bring your workhorse to a standstill, causing endless frustration and costly diagnostic guesswork. If you’re dealing with a persistent check engine light, poor fuel economy, erratic shifting, or a no-start condition, it’s time to stop chasing symptoms and replace the core of the problem. This module is the definitive, reliable solution to get your vehicle back on the road and running strong.
Common Symptoms & Your Solution
A faulty engine computer can manifest in numerous ways, often mimicking other component failures. If you’re experiencing any of the following, this pre-programmed module is your answer:
- Persistent Check Engine Light (CEL)
- Diagnostic Trouble Codes (DTCs) related to internal module failure (e.g., P0601, P0605)
- Engine stalling or cutting out intermittently
- Harsh or unpredictable transmission shifting
- Noticeable drop in fuel mileage
- Complete no-start condition where the engine cranks but won’t fire
- Failure to communicate with diagnostic scan tools
Instead of paying for expensive dealership diagnostics and programming fees, this module arrives ready for installation. We take your vehicle’s VIN and flash the unit with the latest, most stable software updates from GM, ensuring it’s a perfect match for your specific configuration. This is the most efficient and reliable way to restore your vehicle’s performance.
Features & Benefits
- ✔ Programmed to Your VIN: We flash the module with your vehicle’s specific information, guaranteeing compatibility and proper function right out of the box.
- ✔ Loaded with Latest GM Software: Ensures your engine and transmission operate with the most up-to-date calibrations for optimal performance, emissions, and efficiency.
- ✔ Direct OEM Fitment: Designed to install perfectly in the factory location using the original hardware and connectors, making replacement straightforward.
- ✔ Cost-Effective Solution: Avoids the high costs and scheduling hassles associated with dealership programming and service.
- ✔ Rigorously Inspected: Each unit is thoroughly checked to ensure it’s ready for years of dependable service, giving you confidence in your repair.
An Expert’s Insight: As a technician with over two decades of experience, I’ve seen countless headaches caused by mismatched modules from a salvage yard or generic, unprogrammed parts. That’s why we don’t just sell a part; we provide a complete solution. By programming this 1999-2000 Tahoe PCM with your vehicle’s specific VIN, we ensure all factory-installed options—from the engine and transmission type to the axle ratio and tire size—are correctly configured. This isn’t just about making the engine start; it’s about making it run right, just as the factory intended.
Frequently Asked Questions
How do I provide my Vehicle Identification Number (VIN)?
After you complete your purchase, simply send us a message with your 17-digit VIN. We cannot ship your part until we receive this information, as the programming process is specific to your vehicle.
Is this part difficult to install?
The physical installation is typically very simple, involving disconnecting the battery, unplugging the electrical connectors, and unbolting the old module. However, after installation, you will need to perform a simple security relearn procedure so the module recognizes your keys. This procedure does not require special tools and instructions are readily available online.
What is a security relearn procedure?
For most GM vehicles of this era, it’s a simple key-cycle process. It typically involves turning the key to the ‘ON’ position for 10-15 minutes, then off, and repeating this two more times. This allows the vehicle’s anti-theft system to synchronize with the new 1999-2000 Tahoe PCM.
Will this fix my check engine light?
If the check engine light and running issues are caused by a faulty PCM, this part will resolve the problem. It is crucial to ensure your vehicle has been properly diagnosed, as this module will not fix issues caused by other faulty sensors or mechanical problems.
What if my original part number isn’t listed?
The part numbers listed (like 16263494) are the most common, but GM used several compatible hardware versions. As long as your vehicle’s year, make, and model are on our compatibility list, we can program this 1999-2000 Tahoe PCM to function perfectly for your application.
Is any other programming required after installation?
In most cases, no. Our VIN programming covers the engine and transmission operating systems. The only additional step is the security relearn. On some vehicles, a Crankshaft Variation Relearn (CASE Relearn) may be needed to clear a P1336 code, which can be done with a capable scan tool.