GMC Sierra Denali problems by year
106 owner complaints filed with NHTSA across 17 GMC Sierra Denali model years. Last verified Aug 7, 2026. Complaint totals are lifetime counts — years that have been on the road longer accumulate more reports.
Years with notably fewer complaints
2005 (4)
| Year | Complaints | Recalls | Most reported problem | |
|---|---|---|---|---|
| 2020 | 9 | 0 | — | |
| 2019 | 26 | 0 | Service Brakes | |
| 2018 | 17 | 0 | — | |
| 2017 | 14 | 0 | — | |
| 2016 | 30 | 0 | Power Train | |
| 2015 | 22 | 0 | Service Brakes | |
| 2014 | 14 | 0 | — | |
| 2013 | 8 | 0 | — | |
| 2012 | 10 | 0 | — | |
| 2011 | 28 | 0 | Unknown OR Other | |
| 2010 | 10 | 0 | — | |
| 2009 | 7 | 0 | — | |
| 2008 | 18 | 0 | — | |
| 2006 | 5 | 0 | — | |
| 2005 Fewer complaints | 4 | 1 | — | |
| 2004 | 11 | 0 | — | |
| 2002 | 13 | 0 | — |
How to read this. Complaints are unverified reports owners file with NHTSA’s Office of Defects Investigation, counted once per case number. Raw totals are not adjusted for sales volume, and recent model years have had less time on the road. “Most complained” flags years well above the model’s median; treat it as a signal for deeper research, not a verdict. This page is not affiliated with GMC.