2021 Chevrolet Silverado 1500 engine and engine cooling problems
58 owner complaints filed with NHTSA name the engine and engine cooling on the 2021 Chevrolet Silverado 1500 — 7% of all complaints for this model year.
What owners report
“The contact owns a 2021 Chevrolet Silverado 1500. The contact stated that while attempting to start the vehicle, there was an abnormal sound coming from the front driver's side of the vehicle. The contact inspected the vehicle and became aware that the exhaust manifold bolts had detached. The…”
filed Sep 8, 2026
“The contact owns a 2021 Chevrolet Silverado 1500. The contact stated that while attempting to start the vehicle, the engine failed to crank. The contact originally suspected a battery failure, as the vehicle had recently been involved in an accident that left the passenger-side mirror damaged with…”
filed Aug 21, 2026
Verbatim excerpts from complaints filed with NHTSA. Reports are not independently verified.
Related recalls
- Connecting rod and/or crankshaft engine components may have manufacturing defects that…Campaign 25V274000 · Apr 24, 2025
Engine and Engine Cooling problems in other Silverado 1500 years
| Year | Reports | Share |
|---|---|---|
| 2025 Silverado 1500 | 1 | 1% |
| 2024 Silverado 1500 | 20 | 7% |
| 2023 Silverado 1500 | 26 | 7% |
| 2022 Silverado 1500 | 25 | 4% |
| 2020 Silverado 1500 | 26 | 4% |
| 2019 Silverado 1500 | 48 | 4% |
| 2018 Silverado 1500 | 9 | 2% |
| 2017 Silverado 1500 | 3 | 0% |
| 2016 Silverado 1500 | 1 | 0% |
| 2015 Silverado 1500 | 12 | 1% |
| 2014 Silverado 1500 | 9 | 1% |
| 2013 Silverado 1500 | 2 | 1% |
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.