2014 Chevrolet Corvette Owner Manual - Page 207

Driving and Operating The outer ring rotates to change the modes, which display in the instrument cluster. Press the button in the center of the knob for Stability Control and Traction Control, or if the vehicle is in Track mode with Performance Traction Management. See Stability Control and Traction Control in Traction Control/Electronic Stability Control on page 9-36 or PTM in Competitive Driving Mode on page 9-42. When PTM is active, the outer ring will change the PTM mode and the Driver mode will display in the instrument cluster. Each mode is configured for use in different driving conditions. Use: . 9-39 Weather mode for rain and snow. Eco mode to improve fuel economy. Tour mode for comfortable normal driving. Sport mode for spirited on road driving. Track mode for track use. . . . . There are 12 attributes that vary by mode shown below. Not all vehicles have all features, depending on the vehicle options.