2021 Chevrolet Silverado 1500 electrical system problems
106 owner complaints filed with NHTSA name the electrical system on the 2021 Chevrolet Silverado 1500 — 14% of all complaints for this model year.
What owners report
“May 28 ,2026 I left work to get some lunch And when I went back inside my vehicle I turned it on and the check engine light came On and on the dash it was telling me to park the truck and it wasn’t going more then 45mph so I called my dealer ship simspson Chevrolet in garden grove and they told me…”
filed Jul 15, 2026
“Loss of engine power while merging or passing traffic. * Reduced acceleration making it difficult to enter highways safely. * Engine overheating if the active grille shutters fail in the closed position. * Unexpected limp mode causing sudden speed reduction in traffic. * Increased risk of a…”
filed Jul 14, 2026
Verbatim excerpts from complaints filed with NHTSA. Reports are not independently verified.
Electrical System problems in other Silverado 1500 years
| Year | Reports | Share |
|---|---|---|
| 2026 Silverado 1500 | 11 | 17% |
| 2025 Silverado 1500 | 23 | 27% |
| 2024 Silverado 1500 | 36 | 13% |
| 2023 Silverado 1500 | 60 | 17% |
| 2022 Silverado 1500 | 127 | 22% |
| 2020 Silverado 1500 | 101 | 15% |
| 2019 Silverado 1500 | 185 | 18% |
| 2018 Silverado 1500 | 99 | 19% |
| 2017 Silverado 1500 | 123 | 17% |
| 2016 Silverado 1500 | 119 | 15% |
| 2015 Silverado 1500 | 162 | 15% |
| 2014 Silverado 1500 | 340 | 24% |
Other reported problem areas on the 2021 Chevrolet Silverado 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.