Table 1 shows two common exterior lighting related problems of the 2018 GMC Sierra 1500. The number one most common problem is related to the headlights (two problems). The second most common problem is related to the exterior lighting (one problem).
| Problem Category | Number of Problems |
|---|---|
| Headlights problems | |
| Exterior Lighting problems |
Passenger side headlight jiggles up and down constantly over every small bump. Very distracting and leaves many black areas on the road from lack of light. Fix this immediately! Read details...
The left rear tail light assembly is subject to direct wheel spray resulting in premature corrosion and failure of the lightbulb and wiring harness. Failure first occurred within 18 months of ownership. I cleaned the contacts and packed the connection with dielectric grease. Read details...