Table 1 shows two common exterior lighting related problems of the 2018 GMC Sierra 2500. The number one most common problem is related to the headlights (three problems). The second most common problem is related to the exterior lighting (one problem).
| Problem Category | Number of Problems |
|---|---|
| Headlights problems | |
| Exterior Lighting problems |
Headlight shakes and flickers while driving over bumps in the road. Happens on city streets and highways. Flickering is very distracting and draws attention away from your surroundings. Read details...
I have a 2018 GMC sierra duramax quad-cab and when it is connected to either my boat, stock trailer, or cargo trailer the lights and electric trailer brakes on the trailers do not work. And the chime from the "service trailer brake" indicator sounds and doesn't stop until I unplug my Read details...