One problem related to headlight switch has been reported for the 2015 GMC Sierra. The most recently reported issues are listed below.
Headlights have been adjusted by the dealer twice. The headlights are a single bulb design (low and high beams from one bulb). If low beams are adjusted to adequately see the road during night driving the high beams point into the air (approx. 10 feet in the air at 100 feet from the vehicle). If the beams are adjusted to allow the high beams to illuminate the road properly; when switched to the low beams there is insufficient light on road to drive safely at 55 mph.
| Headlights problems | |
| Exterior Lighting problems | |
| Headlight Switch problems | |
| Fog Light Switch problems |