2015 GMC Sierra 1500 fuel/propulsion system problems
13 owner complaints filed with NHTSA name the fuel/propulsion system on the 2015 GMC Sierra 1500 — 2% of all complaints for this model year.
What owners report
“fuel pump losses prime overnight. gas sprays from fuel line onto top of fuel tank. problem was brought to my attention by a repair shop.. found several instances listed on YouTube of this problem”
filed Jul 9, 2025
“Cross member holding file tank rusted through causing the fule tank to not be supported and shock mounts no longer support the shocks to frame causing shocks to bounce around with possibility to puncher fule tank or lines Also rear cross member that holders electrical components rusts off Excessive…”
filed Dec 2, 2024
Verbatim excerpts from complaints filed with NHTSA. Reports are not independently verified.
Fuel/propulsion System problems in other Sierra 1500 years
| Year | Reports | Share |
|---|---|---|
| 2026 Sierra 1500 | 4 | 6% |
| 2025 Sierra 1500 | 6 | 6% |
| 2024 Sierra 1500 | 17 | 5% |
| 2023 Sierra 1500 | 25 | 6% |
| 2022 Sierra 1500 | 21 | 4% |
| 2021 Sierra 1500 | 33 | 6% |
| 2020 Sierra 1500 | 24 | 5% |
| 2019 Sierra 1500 | 21 | 3% |
| 2018 Sierra 1500 | 10 | 3% |
| 2017 Sierra 1500 | 7 | 2% |
| 2016 Sierra 1500 | 8 | 2% |
| 2014 Sierra 1500 | 12 | 2% |
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.