GMC Sierra Denali engine problems by year
8 NHTSA owner complaints name the engine across 3 Sierra Denali model years. The most reported year is 2019 with 4 reports.
| Year | Engine reports | Share | Median mileage | |
|---|---|---|---|---|
| 2019 Sierra Denali | 4 | 15% | — | |
| 2016 Sierra Denali | 3 | 10% | — | |
| 2015 Sierra Denali | 1 | 5% | — |
Share is the fraction of that year’s complaints naming the engine. Raw counts are not adjusted for sales volume — years that sold more units naturally accumulate more reports.