2014 Chevrolet Impala Owner Manual - Page 248

9-40 Driving and Operating . To begin using ACC again, press the +RES button on the steering wheel. The vehicle returns to the previous set speed. Increasing Speed While ACC is at a Set Speed If ACC is already activated, do one of the following: . To increase vehicle speed in small increments, briefly press +RES. For each press the vehicle goes 5 km/h (1 mph) faster. . Press and hold the SET- button until the desired lower speed is reached, then release it. To decrease the vehicle speed in smaller increments, briefly press SET-. For each press, the vehicle goes about 5 km/h (1 mph) slower. . Use the accelerator to get to the higher speed. Press the SET- button. Release the control and the accelerator pedal. The vehicle will now cruise at the higher speed. When the accelerator pedal is pressed, ACC will not brake because it is overridden. A warning message will appear on the Driver Information Center (DIC). See Cruise Control Messages on page 5-31. When it is determined that there is no vehicle ahead or the vehicle is beyond the selected following gap, then the vehicle speed will increase to the set speed. The speedometer reading can be displayed in either English or metric units. See Instrument Cluster on page 5-9. The increment value used depends on the units displayed. Reducing Speed While ACC is at a Set Speed If ACC is already activated, do one of the following: . The speedometer reading can be displayed in either English or metric units. See Instrument Cluster on page 5-9. The increment value used depends on the units displayed. Selecting the Follow Distance Gap When a slower moving vehicle is detected ahead within the selected following gap, ACC will adjust the vehicle's speed and attempt to maintain the follow distance gap selected. Press GAP on the steering wheel to adjust the following gap. When pressed, the current gap setting displays briefly on the instrument cluster. . Press and hold the +RES button until the desired set speed appears on the display, then release it. Use the brake to get to the desired lower speed. Press the SET- button and release the accelerator pedal. The vehicle will now cruise at the lower speed.