2026 GMC Sierra 1500 engine problems
44 owner complaints filed with NHTSA name the engine on the 2026 GMC Sierra 1500 — 64% of all complaints for this model year.
What owners report
“Engine died while driving at higher speed on interstate. Barely able to pull to emergency lane before truck stopped. No warning of any issues with it. Had towed to dealership. Dealership confirmed 6.2 engine was faulty. Engine replaced under warranty. Truck only had 1207 miles on it when engine…”
filed Jul 31, 2026
“While traveling from [XXX] to [XXX] for vacation, I was in [XXX], and when I pulled off the interstate and came to a stop sign the vehicle quit. At first, I was unable to restart the Vehicle, but after sometime I got it started and was able to pull it off the road while the engine was making very…”
filed Jul 29, 2026
Verbatim excerpts from complaints filed with NHTSA. Reports are not independently verified.
Related service bulletins
Certain vehicles listed above may have a condition in which the oil filter was not adequately tightened. Dealers are to check and tighten the oil filter if found to be loose.
N262568830 · Service Campaign · issued Aug 4, 2026
Engine problems in other Sierra 1500 years
| Year | Reports | Share |
|---|---|---|
| 2025 Sierra 1500 | 39 | 42% |
| 2024 Sierra 1500 | 152 | 47% |
| 2023 Sierra 1500 | 183 | 44% |
| 2022 Sierra 1500 | 215 | 40% |
| 2021 Sierra 1500 | 275 | 52% |
| 2020 Sierra 1500 | 213 | 48% |
| 2019 Sierra 1500 | 283 | 46% |
| 2018 Sierra 1500 | 63 | 21% |
| 2017 Sierra 1500 | 56 | 16% |
| 2016 Sierra 1500 | 37 | 11% |
| 2015 Sierra 1500 | 83 | 12% |
| 2014 Sierra 1500 | 69 | 9% |
Other reported problem areas on the 2026 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.