2021 GMC Terrain check engine light reports
5 NHTSA complaints describe persistent or recurring check-engine warnings on the 2021 GMC Terrain — roughly 15% of all complaints for this model year.
5
Check engine light reports
15%
share of complaints
—
median reported incident mileage (all complaints)
Components reported on this vehicle
Check engine light in other Terrain years
| 2023 Terrain | 10 |
| 2022 Terrain | 9 |
| 2020 Terrain | 26 |
| 2019 Terrain | 25 |
| 2018 Terrain | 25 |
| 2017 Terrain | 8 |
| 2016 Terrain | 8 |
| 2015 Terrain | 23 |
| 2014 Terrain | 25 |
| 2013 Terrain | 36 |
Other symptoms owners describe on the 2021 GMC Terrain
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 2021 GMC Terrain report before drawing conclusions.