One problem related to headlight switch has been reported for the 2014 Chevrolet Impala. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2014 Chevrolet Impala based on all problems reported for the 2014 Impala.
I would like to report an ongoing issue with 2014 Chevrolet Impala LS with standard halogen headlights. The headlight beam, both on high and low beams, is very narrowly focused so that the area immediately to the front and side of the car -- and objects located there -- cannot be easily seen. The lights work reasonably well on a straight road, but when executing a turn the path of the car is in near darkness as the lights point a narrow beam to the outside of the turning radius. This makes driving at night on anything other than straight highways an unnerving experience and I believe represents a serious safety risk both to the vehicle occupants, and to pedestrians who might be outside the headlights' narrow focal range. Note that the headlight design is unusual for a halogen unit in that it uses a shutter to switch between high and low beam, a feature more commonly found with hid lights. By comparison, our 2003 Chevrolet malibu, with separate reflector based halogen low and high beams, does a much better (I believe much safer) job of illuminating a broad area in front of and to sides immediately in front of the vehicle. I think that gm must address this serious safety issue on an otherwise fine vehicle.