2019 GMC Sierra 1500 exterior lighting problems
11 owner complaints filed with NHTSA name the exterior lighting on the 2019 GMC Sierra 1500 — 2% of all complaints for this model year.
What owners report
“I am retired and have always bought GM vehicles which are taken care of with required oil changes etc. This one I have only owned 25,000 mi each year (I have owned two years). So, when purchased it has high 50,000 miles not sure of exact, and it has only been driven 2 years. When calling escalation…”
filed Jun 23, 2026
“The contact owns a 2019 GMC Sierra 1500. The contact stated that the trailer lights flashed intermittently while the vehicle is turned off. Additionally, the contact stated while driving with a trailer hitched to the vehicle, the messages "Trailer Disconnected" and "Trailer Connected" were…”
filed Jun 2, 2026
Verbatim excerpts from complaints filed with NHTSA. Reports are not independently verified.
Exterior Lighting problems in other Sierra 1500 years
| Year | Reports | Share |
|---|---|---|
| 2025 Sierra 1500 | 2 | 2% |
| 2024 Sierra 1500 | 14 | 4% |
| 2023 Sierra 1500 | 10 | 2% |
| 2022 Sierra 1500 | 1 | 0% |
| 2021 Sierra 1500 | 2 | 0% |
| 2020 Sierra 1500 | 3 | 1% |
| 2018 Sierra 1500 | 3 | 1% |
| 2017 Sierra 1500 | 9 | 3% |
| 2016 Sierra 1500 | 4 | 1% |
| 2015 Sierra 1500 | 93 | 13% |
| 2014 Sierra 1500 | 148 | 20% |
| 2013 Sierra 1500 | 3 | 3% |
Other reported problem areas on the 2019 GMC Sierra 1500
Counts are unique NHTSA complaints naming this component group. Complaints are unverified owner reports; mileage is computed only from complaints that included a usable odometer reading.