Fog Light Switch problems of the 2014 GMC Sierra 1500

Six problems related to fog light switch have been reported for the 2014 GMC Sierra 1500. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2014 GMC Sierra 1500 based on all problems reported for the 2014 Sierra 1500.

1 Fog Light Switch problem

Failure Date: 01/28/2018

My husband and I were driving on highway 1 just past montara beach. It was around 7:30 pm and already dark. We were going approximately 45 mph when all of a sudden, both headlights shut off on its own. We were approaching an extremely curvy stretch of road along ocean cliffs and there was nowhere to pull over. The symbol on the dash was lit up saying that our lights were on (even though they weren't). Thankfully there was a car in front of us and one behind us that gave us enough light and time to react which meant we didn't have to jam on our brakes and hope for the best. We tried the high beams which also did not work. After turning knobs and pressing buttons (while driving) to get some illumination, we finally were able to turn on the fog lights which was enough to get us somewhere safe. This is extremely dangerous and should never happen to anyone. Without the headlights from the car in front of us and behind us, this could have ended very badly, possibly even fatal. We were never able to get the headlights back on and plan on bringing the truck to a local GMC dealer tomorrow. Unfortunately, even if we get it fixed, we will be worried every time we drive it at night knowing that this could have ended so much worse. We haven't even put 1000 miles on it since we purchased it.

2 Fog Light Switch problem

Failure Date: 11/21/2017

The headlights on this pickup make driving at night in rural south dakota almost impossible and even dangerous. I have owned this truck for only 2 weeks and found in order to drive at night I have to have the fog lights on to see, and even than it is not much better. The brights help none. Can't even tell when they are on vrs not. There has to be a fix or something that can be done to fix this. Driving at night is dangerous.

3 Fog Light Switch problem

Failure Date: 10/13/2016

I purchased this truck new in October, 2014. My research prior to purchase showed a number of complaints about the headlights, but I did not think there were enough complaints for me to be concerned. I was wrong. I live in a rural area and the headlights are definitely inadequate on the low beam setting. The mechanical shutter design produces a very sharp beam cutoff at about the level of the hood, making it seem like you are sitting in a darkened area above a bowl of light. The projector headlights provide little, if any, illumination of objects on the side of the road. I use the fog/driving lights continually on the truck or I would not feel comfortable driving it with low beams in unlit areas. For the sake of comparison, I have attached two images taken on two consecutive mornings at approximately the same location on my driveway. The truck picture was taken approximately ten minutes later than the car picture (both were approximately 6:45 a. M. ). Note there is a slight perspective shift due to the height difference in the vehicles and the driving/fog lights were not on on either vehicle when the picture was taken. Note the 25-year old technology sealed beam headlights show the fence posts at the right side of the vehicle where the GMC's headlights show a dark void. It honestly feels like you are driving through a tunnel of light in the truck. You have no hope of seeing any objects on either side of the road. There is a TSB on this issue that recommends replacing the bulbs and reprogramming the bcm. My truck has not had this performed because the dealership did not have the bulbs in stock when I asked about it. There is some debate on message boards regarding whether or not the update offers any benefits. Additionally, the new bulbs allegedly have a significantly shortened life over the originals and they can be difficult to locate when needed.

4 Fog Light Switch problem

Failure Date: 01/07/2016

The projector beam headlights on my 2 year old GMC sierra are, and have been, noticeably dim to the point of being a safety concern. It's as if trying to drive at night while wearing dark sunglasses. In addition to being dim, there's also the problem of side illumination. I can see some of the road ahead, but can't see the ditches on either side of the road. I consider this lack of side illumination to also be a safety issue, especially when negotiating turns or curves. Using high beams offers little, if any improvement. The high beams only seem to shine higher (tree top height), but offer no real increase in either side illumination or actual brightness. The "eye lids" lift, but poor illumination remains unchanged. About the only option is for me to drive with the fog lights on. Using fog lights at least gives a bit more side illumination, but still does nothing to assist with "down the road" illumination. I've been surprised at such poor lighting being installed on an otherwise great truck. These projector beam headlights were supposedly offered as part of premium packages. If these headlights are GMC's best, I'm sure glad I didn't get the cheaper lights! my only hope is that GMC will offer some type of headlight upgrade, possibly led lights.

5 Fog Light Switch problem

Failure Date: 02/05/2015

I've had my 2014 GMC sierra for nearly a year now, first night I had it I couldn't believe how poor the light output was from the headlights. I've had numerous GMC sierra trucks over the years and this truck by far has the worse headlights I've ever had in a truck. There are a lot of people online complaining, I'm definantly not the only one upset with how poor these headlights are. There are a few guys in town with this same truck they all hate the headlights too. These headlights just seem very dim, they don't shine the ditchs up very well, they don't shine ahead very far either. I have better luck running the headlights on low beam and fog lights on, it almost seems like less light on high beam so I rarely have them on high, I've had multiple occasions where I nearly hit a moose, these headlights are very dangerous I'm worried that one of these days I'm going to hit a moose or worse a person! I really hope somebody does something about these headlights gm didn't listen to anything I had to say.

6 Fog Light Switch problem

Failure Date: 03/31/2014

The headlights do not illuminate the road enough. Very dim and cannot even tell where cut off line is. Even with fog lights on, it is unsafe to drive at night.


Other Exterior Lighting related problems of the 2014 GMC Sierra 1500



Safety Ratings of Sierra 1500 Cars
Sierra 1500 Service Bulletins
Sierra 1500 Safety Recalls
Sierra 1500 Defect Investigations