Restore Peak Performance to Your C5 Corvette or GM Truck
Is your 1999-2000 Corvette suffering from baffling engine problems? A faulty Powertrain Control Module (PCM) is often the culprit behind issues like erratic idling, poor fuel economy, stalling, or a persistent Check Engine Light. The PCM is the brain of your vehicle, managing everything from fuel injection and spark timing to transmission shifting. When it fails, the symptoms can be widespread and frustrating. This replacement Powertrain Control Module, part number 9354896, is the definitive solution to get your vehicle back on the road and running as the factory intended.
We take the guesswork and hassle out of the repair process. Unlike a generic module from a parts store, this unit arrives at your door fully programmed to your vehicle’s specific Vehicle Identification Number (VIN). We load it with the latest, most stable software updates directly from GM. This means no expensive trips to the dealership for programming, no special tools required for flashing, and a much smoother installation process. It’s designed to be a direct-fit, plug-and-play solution for the original computer.
From the Diagnostic Bay
We had a 2000 Corvette in the shop that was driving its owner crazy. It would start and run fine, but after about 20 minutes of driving, it would start to stumble, the transmission would shift harshly, and occasionally it would just stall at a stoplight. The Check Engine Light was on, but the codes were all over the place—misfire codes, O2 sensor codes, even a transmission communication error. The owner had already replaced plugs, wires, and a couple of sensors with no luck. After checking all the wiring and grounds, we hooked up our diagnostic scanner and monitored the live data from the PCM. We noticed the injector pulse width and ignition timing data would become erratic right before the issue occurred. This pointed to an internal failure in the PCM, likely caused by heat and age. We installed one of our VIN-programmed modules, performed the security relearn, and the car ran perfectly. It’s a classic example of how a failing PCM can mimic a dozen other problems, and how a quality, pre-programmed replacement is the fastest path to a reliable fix.
Common Symptoms of a Failing 1999-2000 Corvette PCM
- ✔ Check Engine Light: The light is illuminated with various trouble codes, often related to sensors, emissions, or internal processor faults (e.g., P0601, P0606).
- ✔ No-Start Condition: The engine cranks but refuses to start, often due to the PCM not firing the ignition coils or fuel injectors.
- ✔ Poor Engine Performance: You may experience a noticeable loss of power, hesitation during acceleration, and rough idling.
- ✔ Reduced Fuel Economy: A malfunctioning PCM can’t efficiently manage the engine’s fuel delivery, leading to a significant drop in MPG.
- ✔ Harsh or Incorrect Shifting: The PCM also controls the automatic transmission, and a failure can cause hard shifts, getting stuck in one gear, or delayed engagement.
- ✔ Intermittent Stalling: The engine may stall for no apparent reason, either while driving or at idle, and may or may not restart immediately.
The Plug-and-Play Advantage
Replacing a modern vehicle’s computer isn’t as simple as swapping a part. The PCM is integrated with your vehicle’s anti-theft system (VTD/Passlock) and contains specific data for your engine, transmission, and options. Our service handles the most complex part for you. By providing your VIN at checkout, you receive a module that is a true mate for your car. Once installed, you will likely need to perform a simple security relearn procedure, which can typically be done in your driveway without any special tools. This procedure syncs the new PCM with your vehicle’s existing security system, allowing it to start. This simple step saves you hundreds of dollars in dealership labor and programming fees.
Broad GM Compatibility
While this is a cornerstone part for the C5 Corvette, this versatile PCM, also known by part numbers 19109040 and 09354896, was used across a wide range of popular GM vehicles. This unit is a direct replacement for the following applications:
- Chevrolet Corvette: 1999-2000
- Chevrolet Camaro: 1999-2002 (5.7L)
- Pontiac Firebird / Trans Am: 1999-2002 (5.7L)
- Chevrolet Silverado 1500/2500: 1999-2000
- GMC Sierra 1500/2500: 1999-2000
- Chevrolet Tahoe & Suburban 1500/2500: 2000
- GMC Yukon & Yukon XL 1500/2500: 2000
Please verify the part number and check the fitment details to ensure this is the correct computer for your specific vehicle and options.
Frequently Asked Questions
Do I need to get this PCM programmed by a dealer?
No. We handle the programming for you before we ship the part. Simply provide us with your vehicle’s 17-digit VIN during or after checkout, and we will flash the module with the latest GM-certified software for your exact vehicle configuration. This makes the installation process much simpler.
Where is the PCM located on my 1999-2000 Corvette?
On the 1999-2000 C5 Corvette, the PCM is located in the engine compartment on the right-hand (passenger) side, near the firewall and behind the battery. On GM trucks like the Silverado and Sierra, it is typically found under the hood on the driver’s side, below the battery tray.
What is a security relearn or CASE relearn?
A security relearn (also known as a VTD or Passlock relearn) is a procedure that syncs the new PCM to your car’s anti-theft system. It usually involves a sequence of turning the key to the ‘ON’ position for about 10 minutes, three times in a row. A CASE (Crankshaft Angle Sensor Error) relearn syncs the PCM with the crankshaft position sensor, which is necessary for misfire detection. The CASE relearn typically requires a capable bi-directional scan tool.
Is this a simple plug-and-play installation?
It is designed to be as close to plug-and-play as possible. After physically installing the module, which involves disconnecting the battery and swapping the electrical connectors, you will need to perform the security relearn procedure to allow the vehicle to start. For optimal performance, a CASE relearn is also recommended.
How do I provide my VIN number?
After you complete your purchase, you can send us a message with your 17-digit VIN. We cannot program and ship your module until we receive this information. Please double-check the VIN for accuracy to ensure correct programming.