2018 GMC Denali. During normal driving the headlights shake and flicker. This happens under normal driving conditions and shouldn't be considered a normal occurrence by GM. C'mon GM - you got to do better than that! I first observed the problem on a night trip a week after purchasing new with 500 miles on odometer. I can see this as being a safety issue to oncoming vehicles during night driving.

Headlights don't work whatsoever, no illumination from low or hi beams. There were 8 close calls in city traffic between intersection lighting. Near misses from hobos and homeless on bicycles in roadway coming in laterally, cutting across lanes. Nothing can be seen at night in front of vehicle. Despicable of GMC.