Restore Peak Performance to Your GM Vehicle
Is your 1999-2000 Corvette, Camaro, or Silverado suffering from perplexing issues like a persistent check engine light, poor fuel economy, or a no-start condition? The Powertrain Control Module (PCM), the electronic brain of your vehicle, is often the culprit. This vital component manages everything from fuel injection and ignition timing to transmission shifting and emissions control. When it fails, it can cause a cascade of problems that are frustrating to diagnose and can leave your vehicle unreliable. This replacement PCM, part number 9354896, is the definitive solution to restore your vehicle’s factory performance and reliability.
From the Diagnostic Bay
We had a 2000 Corvette C5 come into the shop with a complaint that stumped a few other mechanics. The owner described intermittent stalling at stoplights and a strange, occasional ‘hiccup’ during acceleration. There were no consistent trouble codes, just a history of random misfire and communication loss codes. After checking all the usual suspects—fuel pressure, ignition system, and wiring harnesses—we focused on the PCM. On a hunch, we monitored the PCM’s internal temperature data while running the engine. We noticed that as the engine bay heated up, the data streams would become erratic just before a stall. A replacement PCM, programmed to the car’s VIN, solved the problem instantly. It’s a classic example of how a failing computer can create ghost-like symptoms that defy simple diagnosis.
Diagnosing Your 1999-2000 Corvette PCM Failure
A failing PCM can manifest in numerous ways, often mimicking other component failures. If you’re experiencing any of the symptoms below, it’s a strong indicator that your engine computer may need replacement. Ignoring these signs can lead to further damage to other components, such as the catalytic converter, and can leave you stranded. This module is a direct-fit replacement for a wide range of GM vehicles from 1999 to 2002, making it a versatile and essential component for many popular cars and trucks.
Common Symptoms of a Failing GM PCM
- ✔ Persistent Check Engine Light (CEL) with various codes, especially communication or internal processor fault codes.
- ✔ Engine stalling, stumbling, or hesitating for no apparent reason.
- ✔ No-start or hard-starting conditions, even with a good battery and starter.
- ✔ Noticeable decrease in fuel economy.
- ✔ Harsh or erratic automatic transmission shifting.
- ✔ Failure to pass state emissions testing.
- ✔ Intermittent loss of power to fuel injectors or ignition coils.
A Simple, Plug-and-Play Solution
We take the guesswork and complexity out of replacing your engine computer. Unlike a generic module from a parts store or salvage yard, this PCM is professionally programmed specifically for your vehicle. After you complete your purchase, simply provide us with your vehicle’s 17-digit VIN. Our technicians will use this information to load the latest GM-certified software and calibrations directly onto the module. This ensures that it communicates perfectly with all other systems in your vehicle, from the anti-theft system to the transmission controller. Your new 1999-2000 Corvette PCM will arrive ready for a straightforward installation, with no need for an expensive trip to the dealership for programming.
This module is a direct replacement for part numbers 19109040, 09354896, and 9354896. It fits a broad range of popular GM models, including the Chevrolet Corvette, Camaro, Silverado, Tahoe, Suburban, and GMC Sierra and Yukon. Please verify the fitment list to ensure compatibility with your specific vehicle and options.
Frequently Asked Questions
Why do you need my VIN?
Your Vehicle Identification Number (VIN) is essential for us to program the PCM with the exact software and calibrations for your vehicle’s specific engine, transmission, and options. This ensures a seamless, plug-and-play installation without compatibility issues.
Is this part difficult to install?
For most of the listed vehicles, the PCM is in an accessible location (e.g., right-hand engine compartment on the Corvette, under the battery tray on trucks). Installation typically involves disconnecting the battery, unplugging the electrical connectors, and unbolting the old module. Basic hand tools are usually sufficient.
Will I need to do anything after installing the new PCM?
In many cases, a security relearn procedure is required to sync the new PCM with your vehicle’s anti-theft system. This is a simple procedure that you can typically do yourself and involves a sequence of key turns. Instructions are widely available online for your specific model. A Crankshaft Position Sensor Relearn (CASE learn) may also be needed, which requires a capable scan tool.
How can I be sure my PCM is the problem?
While the symptoms listed are strong indicators, a definitive diagnosis is best. This involves checking for consistent power and ground at the PCM connectors and ensuring the communication network is intact. If all other potential causes (like sensors or wiring) have been ruled out, the PCM is the likely failure point.
Is this a new or used part?
This is a high-quality, inspected, and tested replacement part that has been prepared to meet or exceed original equipment specifications. It is programmed with the latest software for your vehicle to ensure optimal performance.