2018 GMC Sierra 1500 fuel/propulsion system problems
10 owner complaints filed with NHTSA name the fuel/propulsion system on the 2018 GMC Sierra 1500 — 3% of all complaints for this model year.
What owners report
“I own a $35,000 2018 gmc Sierra 1500 6.2l V8 4x4 Denali, which is currently down due to engine failure while I was driving down the road.. never had a check engine light on the dash. Haven't had the truck a year before it quit. Rods knocking, crankshaft bearings, loss of power, high rpm with little…”
filed Jul 19, 2025
“On February 10, 2025 the vehicle, a 2018 GMC Sierra, caught on fire while parked in the driveway of my home. The vehicle had last been driven earlier in the day with a return to home at approximately 12:45pm. At approximately 7pm I heard a loud pop outside of my home and saw orange light coming…”
filed Feb 12, 2025
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% |
| 2017 Sierra 1500 | 7 | 2% |
| 2016 Sierra 1500 | 8 | 2% |
| 2015 Sierra 1500 | 13 | 2% |
| 2014 Sierra 1500 | 12 | 2% |
Other reported problem areas on the 2018 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.