933 problems have been reported for the 2021 Chevrolet Silverado 1500. The following chart shows the 26 most common problems for 2021 Chevrolet Silverado 1500. The number one most common problem is related to the vehicle's engine and engine cooling with 348 problems. The second most common problem is related to the vehicle's power train (201 problems).
In our research we use the PPMY index to compare the reliability of vehicles. The PPMY index of a certain model is defined as the problems reported per thousand vehicles per Year. The total sales of the 2021 Chevrolet Silverado 1500 in the United States are 391,583 units [1]. If the total number of problems reported by Chevrolet Silverado 1500 owners in the last 5 years is 933, and the age of the vehicle is 5, the PPMY index can then be calculated as
PPMY Index = 933 / 391,583 / 5 * 1000 = 0.48.
For more information, refer to this page: A study of reliability comparison across Chevrolet Silverado 1500 model year vehicles.
The following chart shows the number of problems reported during each of the service years since the debut of the 2021 Chevrolet Silverado 1500 in 2021.
| Service Year | Number of Problems |
|---|---|
| 2026 | |
| 2025 | |
| 2024 | |
| 2023 | |
| 2022 | |
| 2021 |
When making the decision between buying a new or used Chevrolet Silverado 1500, the following table can be used to compare the 2021 Chevrolet Silverado 1500 with the Chevrolet Silverado 1500 from other model years. Note that the number of problems reported for the 2021 Silverado 1500 is 933 while the average number of problems reported for the 31 model years of the Chevrolet Silverado 1500 is 624.