2015 GMC Sierra 1500 engine problems
83 owner complaints filed with NHTSA name the engine on the 2015 GMC Sierra 1500 — 12% of all complaints for this model year.
What owners report
“Active Fuel Management Miss firing Idle rough Shaking Loss of power #7 cylinder loss of all compression Bad fuel mileage Skipping”
filed Apr 20, 2026
“The contact owns a 2015 GMC Sierra 1500. The contact stated that while driving at approximately 45 mph, he observed a popping noise beneath him. The contact stopped the vehicle and observed smoke emanating from the front of the vehicle. The vehicle went into limp mode, lost power, and when the…”
filed Mar 17, 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 | 44 | 64% |
| 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% |
| 2014 Sierra 1500 | 69 | 9% |
Other reported problem areas on the 2015 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.