One problem related to fog light switch has been reported for the 2015 GMC Sierra 3500. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2015 GMC Sierra 3500 based on all problems reported for the 2015 Sierra 3500.
Headlights on this truck have always been weak, distance is not lit up and in rainy weather on the highway is very poor even with fog lights on. The help from the fog lights is minimal. This is a known problem by the manufacturer and is repeated many many times on various gm related owner forums. This is a safety issue and needs to be addressed and corrected by the manufacturer.
| Headlights problems | |
| Exterior Lighting problems | |
| Fog Light Switch problems |