Is Your Corvette or GM Vehicle Acting Possessed?
You turn the key, and… nothing. Or maybe it starts, but it idles rough, shifts erratically, or the check engine light is your most constant companion. These frustrating, often intermittent issues can be a nightmare to diagnose. As a technician with over two decades of experience under the hood, I’ve seen these symptoms countless times, and they often point to one critical component: a failing Powertrain Control Module (PCM).
The Brain of Your Drivetrain
Think of the PCM as the central command center for your engine and transmission. It processes data from dozens of sensors to make thousands of calculations per second, controlling everything from the fuel injectors and spark plugs to the transmission shift points. On vehicles like the 1999-2000 Corvette and the wide range of GM trucks and cars this module fits, it’s a sophisticated piece of hardware. But after 20+ years of heat cycles, vibration, and electrical stress, the delicate internal circuits can begin to break down.
A Technician’s Real-World Experience
“A customer’s 1999 Corvette came into my shop last week with a ghost of a problem. It would randomly refuse to start, but only when warm. No codes, no warning lights. After testing everything from the fuel pump to the ignition switch, we hooked up a scope to the PCM’s communication lines. We found the 5-volt reference signal would intermittently drop out as the module heated up, starving the sensors of power and preventing the engine from starting. A replacement PCM, programmed correctly, solved the issue instantly. It’s a classic failure mode I’ve seen on dozens of these P01-style computers.”
Common Symptoms of a Failing PCM:
If your vehicle is experiencing any of the following, a faulty PCM could be the culprit:
- โ Check Engine Light is on with communication-related fault codes (U-codes) or various sensor codes.
- โ The engine cranks but refuses to start, even with good fuel pressure and spark.
- โ Unexplained stalling, especially after the vehicle has warmed up.
- โ Poor fuel economy and a noticeable loss of power.
- โ Harsh or erratic automatic transmission shifting.
- โ The cooling fans run constantly or don’t turn on at all.
The Direct, Programmed Solution
This isn’t just a replacement part; it’s a complete solution. We take a quality, tested PCM and program it specifically for YOUR vehicle using the VIN you provide. This process ensures that all the correct factory settings, transmission parameters, and security information are perfectly matched to your car or truck. We also load the latest available software updates from General Motors, which can resolve known drivability issues and improve performance and reliability.
Why Pre-Programming is a Game-Changer:
- โ No Dealer Visit Required: Save yourself the time, hassle, and high cost of having a dealership program a new module.
- โ True Plug-and-Play: Once you receive the module, installation is straightforward. In most cases, you will only need to perform a simple security relearn procedure (often just a series of key cycles), which requires no special tools.
- โ Guaranteed Compatibility: By using your VIN, we eliminate the guesswork. You get the right part with the right software, guaranteed.
- โ Restores Original Operation: Our service restores the vehicle’s brain, allowing all related components to function as the factory intended.
Guaranteed Fitment for Your GM Vehicle
This module is a direct replacement for part numbers 19109040, 09354896, and 9354896. Please verify the location on your specific vehicle, as it varies. It is confirmed to fit the following models:
- โ Chevrolet Corvette (1999-2000): Electronic Control Module; (RH engine compartment)
- โ Chevrolet Camaro (1999-2002): Electronic Control Module; (behind RH strut tower), 5.7L
- โ Pontiac Firebird (1999-2002): Electronic Control Module; (behind RH strut tower), 5.7L
- โ Chevrolet & GMC Trucks (1999-2000): Sierra/Silverado 1500 (V8) & 2500 – (LH front under battery)
- โ Chevrolet & GMC SUVs (2000): Tahoe, Suburban 1500/2500, Yukon, Yukon XL 1500/2500 – (LH front under battery)
IMPORTANT: After completing your purchase, please send us your vehicle’s 17-digit VIN. We cannot ship your order until we have programmed the module.