2015 Buick Regal Owner Manual - Page 209

9-28 Driving and Operating D (Drive): This position is for normal driving. It provides the best fuel economy. If more power is needed for passing, and the vehicle is: . Manual Mode Driver Shift Control (DSC) { Caution Driving with the engine at a high rpm without upshifting while using Driver Shift Control (DSC), could damage the vehicle. Always upshift when necessary while using DSC. DSC allows you to shift an automatic transmission similar to a manual transmission. To use the DSC feature: 1. Move the shift lever to the left from D (Drive) into the side gate marked with (+) and (−). 2. Press the shift lever forward to upshift or rearward to downshift. While using the DSC feature, the vehicle will have firmer, quicker shifting. You can use this for sport driving or when climbing or descending hills, to stay in gear longer, or to downshift for more power or engine braking. The transmission will only allow you to shift into gears appropriate for the vehicle speed and engine revolutions per minute (rpm). The transmission will not automatically shift to the next lower gear if the engine rpm is too high, nor to the next higher gear when the maximum engine rpm is reached. Going less than 56 km/h (35 mph), push the accelerator pedal about halfway down. Going about 56 km/h (35 mph) or more, push the accelerator all the way down. . { Caution If the vehicle accelerates slowly, or does not shift gears, the transmission could be damaged. Have the vehicle serviced right away.