Powertrain complaints and recalls from NHTSA
Summary
The 2021 Chevrolet Blazer has 11 NHTSA powertrain complaints and 0 powertrain-related recalls.
11
Complaints
0
Recalls
0
Injuries Reported
Data source: National Highway Traffic Safety Administration (NHTSA) · Last updated April 8, 2026
| Date ↓ | Component | Summary |
|---|---|---|
| Mar 9, 2026 | POWER TRAIN | My 2021 Chevy blazer Lt v6, has a service bulletin extending warranty on thermostat malfunction, th... |
| Jan 7, 2026 | POWER TRAIN,ELECTRICAL SYSTEM,ENGINE | This submission is an additional report related to NHTSA complaint #11714381. At approximately 55,0... |
| Jan 7, 2026 | POWER TRAIN,ELECTRICAL SYSTEM,ENGINE | Around 55,000 miles, my 2021 Chevrolet Blazer experienced a throttle body failure. The check engine ... |
| Dec 13, 2025 | POWER TRAIN,VEHICLE SPEED CONTROL,ENGINE | For about a week and a half my car had made a high pitched wheezing/hubbing sound when started cold.... |
| Nov 17, 2025 | POWER TRAIN,UNKNOWN OR OTHER,ENGINE | My 2021 Chevrolet Blazer experienced a radiator failure at approximately 42,000 miles. The radiator ... |
| Sep 28, 2025 | POWER TRAIN | The contact owns a 2021 Chevrolet Blazer. The contact stated that while her husband was driving 60 M... |
| Sep 19, 2025 | POWER TRAIN | Steering assist reduced warning came on with engine light. When car turned off , radiator fan contin... |
| Sep 10, 2025 | POWER TRAIN | I PURCHASED MY 21 CHEVY BLAZER IN 2024 AND HAD A FEW PROBLEMS WITH A TRANSMISSION PROBLEM. THE VEHIC... |
| Mar 17, 2025 | POWER TRAIN | The contact owns a 2021 Chevrolet Blazer. The contact stated that while driving at an undisclosed sp... |
| Jan 11, 2024 | POWER TRAIN | I was driving on the highway when my car started operating like it was in neutral. RPMs was high bu... |
| Apr 2, 2022 | POWER TRAIN,ENGINE | The contact owns a 2021 Chevrolet Blazer. The contact stated that while driving approximately 10 MPH... |