2021 Chevrolet Silverado 1500 engine and engine cooling problems
55 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 driving at an undisclosed speed, the vehicle came to a complete stop without warning. The contact stated that the failure had occurred twice. During the first failure, the vehicle was towed to the dealer and a lifter…”
filed Aug 3, 2026
“The contact owns a 2021 Chevrolet Silverado 1500. The contact stated that the engine occasionally overheated. The check engine warning light was illuminated for a day, and there were six diagnostic trouble codes displayed. The vehicle was taken to the dealer to be diagnosed, and it was determined…”
filed Jul 17, 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 | 18 | 6% |
| 2023 Silverado 1500 | 26 | 7% |
| 2022 Silverado 1500 | 24 | 4% |
| 2020 Silverado 1500 | 24 | 3% |
| 2019 Silverado 1500 | 47 | 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.