2021 GMC Sierra 1500 latches/locks/linkages problems
10 owner complaints filed with NHTSA name the latches/locks/linkages on the 2021 GMC Sierra 1500 — 2% of all complaints for this model year.
What owners report
“The contact owns a 2021 GMC Sierra 1500. The contact stated that while driving at various speeds, the tailgate opened independently. The failure occurred several times and became more persistent recently. The contact stated that while the vehicle was parked in the driveway, the side marker lights…”
filed Sep 16, 2026
“The contact owns a 2021 GMC Sierra 1500. The contact stated that after the vehicle was taken to a local car wash, upon further inspection, the tailgate door had independently unlatched and was open. No warning light was illuminated. In addition, the contact stated that while driving at an…”
filed Dec 22, 2025
Verbatim excerpts from complaints filed with NHTSA. Reports are not independently verified.
Latches/locks/linkages problems in other Sierra 1500 years
| Year | Reports | Share |
|---|---|---|
| 2024 Sierra 1500 | 1 | 0% |
| 2023 Sierra 1500 | 5 | 1% |
| 2022 Sierra 1500 | 5 | 1% |
| 2019 Sierra 1500 | 4 | 1% |
| 2017 Sierra 1500 | 1 | 0% |
| 2009 Sierra 1500 | 3 | 1% |
| 2008 Sierra 1500 | 23 | 6% |
| 2007 Sierra 1500 | 1 | 0% |
| 2002 Sierra 1500 | 2 | 1% |
| 2000 Sierra 1500 | 1 | 1% |
| 1998 Sierra 1500 | 1 | 2% |
Other reported problem areas on the 2021 GMC Sierra 1500
Counts are unique NHTSA complaints naming this component group. Complaints are unverified owner reports; mileage is computed only from complaints that included a usable odometer reading.