2019 GMC Sierra Denali check engine light reports
5 NHTSA complaints describe persistent or recurring check-engine warnings on the 2019 GMC Sierra Denali — roughly 19% of all complaints for this model year.
5
Check engine light reports
19%
share of complaints
6,200 mi
median reported incident mileage (all complaints)
Components reported on this vehicle
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 2019 GMC Sierra Denali report before drawing conclusions.