Here's why it's unlikely and what's more likely:
* Ignition Switch Issues: A faulty ignition switch could remain partially energized, drawing a small current even when off. This is rare but possible. However, this would usually manifest as other electrical problems, not just a slow drain.
* More Likely Culprits: Parasitic drain in a 2000 Corvette is far more likely to be caused by:
* Faulty alternator: A malfunctioning alternator can continue to draw power even when the car is off.
* Interior lights: A door switch or other interior lighting component could be stuck on or malfunctioning.
* Radio/Stereo: Aftermarket radios or factory radios with faulty wiring can sometimes draw power even when off.
* Alarm system: Problems with the car alarm system are a frequent cause of battery drain.
* Other accessories: Any electrically operated accessory left on or with a faulty connection can cause a drain.
How to Diagnose: To determine if your ignition system is the source of the drain, you'd need to perform a parasitic draw test. This involves disconnecting the battery's negative terminal and using a multimeter to measure the current draw. If the draw is significantly higher than normal (a few milliamps), then you systematically disconnect fuses one by one to identify the circuit causing the drain.
In short: While a faulty ignition switch *could* contribute, it's far less probable than other electrical components. A proper parasitic draw test is necessary to pinpoint the source of your battery drain. You're better off starting by checking the simpler components mentioned above before investigating the ignition system.