One problem related to headlights has been reported for the 2017 GMC Sierra 3500. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2017 GMC Sierra 3500 based on all problems reported for the 2017 Sierra 3500.
Headlights shake or flicker at the slightest bump or crack in road. Gm is aware of the problem but has no fix nor do they plan to.