GMC Sierra 1500 misfire / rough idle reports by year
83 NHTSA complaints describe misfiring cylinders or rough idling on GMC Sierra 1500 vehicles. The most reported year is 2019 with 30 reports.
| Year | Reports | Share of narratives | |
|---|---|---|---|
| 2021 Sierra 1500 | 22 | 4% | |
| 2020 Sierra 1500 | 25 | 5% | |
| 2019 Sierra 1500 | 30 | 5% | |
| 2018 Sierra 1500 | 6 | 2% |
Counts come from keyword analysis of complaint narratives — one complaint can describe several symptoms, and classification is approximate. Raw counts favor years that sold in larger numbers.