2001 Chevrolet Corvette Owner's Manual - Page 95

One to Four Shift Light (Manual Transmission) When this light comes on, you can only shift from FIRST (1) to FOURTH (4) instead of FIRST (1) to SECOND (2). NOTICE: Do not try to force the shift lever into SECOND (2) or THIRD (3) when the 1 TO 4 SHIFT light comes on. Do not try to re-engage FIRST (1) after starting to shift into FOURTH (4). You will damage your transmission. Shift only from FIRST (1) to FOURTH (4) when the light comes on. This light will come on when: You must complete the shift into FOURTH (4) to turn off this feature. This helps you get the best possible fuel economy. After shifting to FOURTH (4), you may downshift to a lower gear if you prefer. D The engine coolant temperature is higher than 169_F (76_C), D you are going 15 to 19 mph (24 to 31 km/h) and D you are at 21 percent throttle or less. 2-33