Where is the thermostat in a 88 Corvette?

The thermostat in a 1988 Corvette is located at the rear of the engine, near the firewall, within the engine's coolant passages. It's not easily accessible; you'll need to remove several components to get to it. A shop manual for your specific year and engine (L98 or a different variant) will provide detailed instructions and diagrams showing its precise location and the necessary removal process.