GMC Sierra Denali electrical system problems by year
10 NHTSA owner complaints name the electrical system across 3 Sierra Denali model years. The most reported year is 2019 with 5 reports.
| Year | Electrical System reports | Share | Median mileage | |
|---|---|---|---|---|
| 2019 Sierra Denali | 5 | 19% | — | |
| 2016 Sierra Denali | 2 | 7% | — | |
| 2015 Sierra Denali | 3 | 14% | — |
Share is the fraction of that year’s complaints naming the electrical system. Raw counts are not adjusted for sales volume — years that sold more units naturally accumulate more reports.