2019 GMC Sierra 1500 engine problems
299 owner complaints filed with NHTSA name the engine on the 2019 GMC Sierra 1500 — 47% of all complaints for this model year.
What owners report
“Since I purchased my vehicle in 2021, I continued to have issues with my oil pressure light coming on usually about 2000 - 3000 miles past the oil change. When checking oil, I would find that it was low 2 quarts of oil each time. I reported this to the GM Dealer and they did oil consumption tests…”
filed Sep 11, 2026
“I am writing to formally log a safety concern regarding my vehicle’s 6.2L L87 engine, specifically in relation to the known defects under NHTSA’s ongoing Engineering Analysis EA25007. The engine seized up while driving in traffic which has a safety impact on the occupants and other drivers. The…”
filed Sep 10, 2026
Verbatim excerpts from complaints filed with NHTSA. Reports are not independently verified.
Engine problems in other Sierra 1500 years
| Year | Reports | Share |
|---|---|---|
| 2026 Sierra 1500 | 74 | 67% |
| 2025 Sierra 1500 | 52 | 45% |
| 2024 Sierra 1500 | 180 | 51% |
| 2023 Sierra 1500 | 204 | 44% |
| 2022 Sierra 1500 | 236 | 40% |
| 2021 Sierra 1500 | 299 | 53% |
| 2020 Sierra 1500 | 231 | 50% |
| 2018 Sierra 1500 | 65 | 22% |
| 2017 Sierra 1500 | 58 | 16% |
| 2016 Sierra 1500 | 38 | 11% |
| 2015 Sierra 1500 | 83 | 12% |
| 2014 Sierra 1500 | 69 | 9% |
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.