Restore Peak Performance to Your GM Truck or Van
Is your 1999-2000 Chevrolet Silverado, GMC Sierra, or another compatible GM vehicle suffering from perplexing issues like a persistent check engine light, poor fuel economy, erratic shifting, or intermittent stalling? These are classic signs of a failing Powertrain Control Module (PCM), the central computer that manages your engine and transmission. A faulty PCM can disrupt vehicle operation, making it unreliable and frustrating to drive. This direct-fit replacement PCM, part number 8162634940, is the definitive solution to restore your vehicle’s factory performance and reliability.
From the Diagnostic Bay
We once had a 2000 Chevy Express van come in with what the owner was convinced was a failing transmission. It was shifting hard, hunting for gears, and sometimes wouldn’t shift out of first. He had already spent hundreds on a transmission fluid flush and a new filter with no improvement. After hooking up our professional scan tool, we noticed erratic data from the PCM to the transmission solenoids. Instead of a costly transmission rebuild, the root cause was a failing driver circuit inside the original computer. A new, properly programmed PCM like this one had the van shifting smoothly in under an hour, saving the owner thousands in unnecessary repairs.
Is Your Vehicle Exhibiting These Symptoms?
A failing engine computer can manifest in numerous ways, often mimicking other component failures. If you’re experiencing any of the following, your PCM is the likely culprit:
- ✔ Check Engine Light (CEL) is illuminated with various trouble codes.
- ✔ Unexplained drops in fuel efficiency.
- ✔ Harsh or delayed automatic transmission shifts.
- ✔ The engine cranks but refuses to start.
- ✔ Intermittent stalling or rough idling, especially when warm.
- ✔ Noticeable loss of engine power and acceleration.
- ✔ Communication errors with diagnostic scan tools.
The Simple, Programmed Solution for Your 1999-2000 Silverado PCM
Don’t let a faulty computer keep your truck off the road. We take the guesswork and hassle out of the replacement process. Unlike a generic module from a parts store or salvage yard, this unit comes fully programmed specifically for your vehicle. Simply provide us with your vehicle’s 17-digit VIN (Vehicle Identification Number) during checkout, and our technicians will flash the module with the latest, most stable GM factory software for your exact configuration. This ensures seamless integration and optimal performance right out of the box, eliminating the need for an expensive trip to the dealership for programming.
This module is a direct replacement for multiple part numbers, including 16263494, 16265035, 8162634940, 218-11787, and 21811787. It is designed to meet or exceed original equipment specifications for durability and function, providing a long-lasting repair for your vehicle’s critical systems. Installation is straightforward for any competent DIY mechanic or professional technician. Get your truck, van, or SUV running like new again with this reliable, pre-programmed powertrain control module.
Frequently Asked Questions
Do I need to do any programming myself?
No. This PCM comes fully programmed to your vehicle’s specific VIN. We handle all the flashing before it ships. In most cases, it is a plug-and-play installation, although some vehicles may require a security relearn procedure, which can be done without special tools.
Where do I find my VIN?
Your 17-digit VIN can be found on your vehicle’s registration, insurance card, or on a metal plate on the driver’s side of the dashboard, visible through the windshield.
What is the difference between a PCM and an ECM?
The terms are often used interchangeably. ECM (Engine Control Module) typically only controls engine functions. A PCM (Powertrain Control Module) is more integrated and controls both the engine and the transmission, which is standard on most vehicles this unit fits.
Will this fix my check engine light?
If the check engine light is caused by a faulty PCM, then yes, this replacement part will resolve the issue. It is crucial to properly diagnose the vehicle first to ensure the PCM is the root cause of the problem.
Is this a new or used part?
This is a high-quality, inspected, and tested component that is guaranteed to perform to OEM standards. It is loaded with fresh, vehicle-specific software to ensure reliability.