What is the corvette one to four shift light?

The Corvette's 1-to-4 shift light isn't a single, universally standardized feature. Instead, it's a customizable option within the car's performance data and display settings.

What this means is that drivers can set the shift light to illuminate at different RPM points for each gear (1st through 4th). The exact RPM at which the light illuminates for each gear depends entirely on the driver's preferences and the engine's capabilities. There's no factory-set "one to four shift light" with specific RPM thresholds. It's a flexible tool for optimizing shifting based on various factors like track conditions, driving style, and engine modifications.