2008 Chevrolet Corvette Owner's Manual - Page 94

When using the Manual Paddle Shift Feature while in the SPORT MODE (S), the current gear will be displayed in the Driver Information (DIC), or the Head-Up Display (HUD), if the vehicle has either of these features. When the transmission gear does not respond to a shift change, the DIC will show an X over the gear display. When a requested shift is denied due to the speed restrictions shown, the DIC will momentarily show an X over the gear display and a chime will sound. If your vehicle has a Navigation system, see "Head-Up Display (HUD)" in the Index of the navigation manual. The Manual Paddle Shift system will not allow either an up-shift or a down-shift if the vehicle speed is too fast or too slow, nor will it allow a start from Fourth (4) or higher gear If up-shifting does not occur when needed, the vehicle speed will be limited to protect the engine. The transmission will also automatically down-shift as the vehicle slows down and comes to a stop. If the vehicle has a HUD, and the transmission gear does not respond to a shift change, then a chime will sound and the HUD will momentarily show an X over the gear display. Manual Paddle Shift operation is available for use with Cruise Control, see Cruise Control on page 3-11 for more information. 2-30