2010 Chevrolet Corvette Owner's Manual - Page 126

Shift Speeds (Manual Transmission) One to Four Shift Light (Manual Transmission) When this light comes on, you can only shift from 1 (First) to 4 (Fourth) instead of 1 (First) to 2 (Second). { WARNING: If you skip a gear when you downshift, you could lose control of the vehicle. You could injure yourself or others. Do not shift down more than one gear at a time when you downshift. This chart shows when to shift to the next higher gear for the best fuel economy. Manual Transmission Recommended Shift Speeds in mph (km/h) Acceleration Shift Speed Engine 1 to 2 2 to 3 3 to 4 4 to 5 5 to 6 All Engines 15 (24) 25 (40) 40 (64) 45 (72) 50 (80) If the engine speed drops below 900 rpm, or if the engine is not running smoothly, you should downshift to the next lower gear. You may have to downshift two or more gears to keep the engine running smoothly or for good engine performance. Notice: When shifting gears, do not move the shift lever around unnecessarily. This may damage the transmission. Shift directly into the next gear. 3-32 See One-to-Four Shift Light (Manual Transmission) on page 4-35 for more information. Downshifting (Manual Transmission) Do not downshift into the gear shown below at a speed greater than shown in the table: 1 (First) 2 (Second) 3 (Third) 4 (Fourth) 50 mph (80 km/h) 74 mph (119 km/h) 101 mph (163 km/h) 130 mph (209 km/h) Notice: If you skip more than one gear when you downshift, or if you race the engine when you release the clutch pedal while downshifting, you could damage the engine, clutch, driveshaft or the transmission. Do not skip gears or race the engine when downshifting.