2020 GMC Sierra 1500 misfire / rough idle reports
20 NHTSA complaints describe misfiring cylinders or rough idling on the 2020 GMC Sierra 1500 — roughly 5% of all complaints for this model year.
20
Misfire / rough idle reports
5%
share of complaints
44,000 mi
median reported incident mileage (all complaints)
Components reported on this vehicle
Misfire / rough idle in other Sierra 1500 years
| 2021 Sierra 1500 | 20 |
| 2019 Sierra 1500 | 29 |
| 2018 Sierra 1500 | 6 |
Other symptoms owners describe on the 2020 GMC Sierra 1500
Symptom counts come from keyword analysis of complaint narratives. One complaint can describe several symptoms, and classification is approximate — read the underlying reports on the full 2020 GMC Sierra 1500 report before drawing conclusions.