2021 Chevrolet Silverado 2500 electrical system problems
17 owner complaints filed with NHTSA name the electrical system on the 2021 Chevrolet Silverado 2500 — 20% of all complaints for this model year.
What owners report
“The contact owns a 2021 Chevrolet Silverado 2500. The contact stated that the connector for the heater system was causing the vehicle to overheat, subsequently enabling the vehicle to go faster than 50 MPH. If the vehicle reaches 75 miles, it would immediately decrease in speed to 5 MPH. The…”
filed Dec 12, 2025
“We believe that it is the park sensor in the column . When you place the truck into park, the screen displays the words shift to park period and the dinger.Inside the truck continues to ding for a long time, even with opening and closing the door ... The truck is actually in park, so it does not…”
filed Oct 23, 2025
Verbatim excerpts from complaints filed with NHTSA. Reports are not independently verified.
Electrical System problems in other Silverado 2500 years
| Year | Reports | Share |
|---|---|---|
| 2025 Silverado 2500 | 7 | 32% |
| 2024 Silverado 2500 | 53 | 38% |
| 2023 Silverado 2500 | 15 | 34% |
| 2022 Silverado 2500 | 27 | 30% |
| 2020 Silverado 2500 | 15 | 15% |
| 2019 Silverado 2500 | 18 | 25% |
| 2018 Silverado 2500 | 13 | 25% |
| 2017 Silverado 2500 | 15 | 28% |
| 2016 Silverado 2500 | 18 | 15% |
| 2015 Silverado 2500 | 57 | 33% |
| 2014 Silverado 2500 | 6 | 15% |
| 2013 Silverado 2500 | 10 | 20% |
Other reported problem areas on the 2021 Chevrolet Silverado 2500
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.