2021 Chevrolet Blazer problems and complaints
Owners have filed 137 complaints with NHTSA about the 2021 Chevrolet Blazer. The most-reported areas: Engine (42), Electrical System (39), Unknown Or Other (21).
Key takeaways
- 137 owner complaints on file with NHTSA.
- 6 involve a crash, 1 a fire, 7 reported injuries.
- Complaints are unverified owner reports; recalls are confirmed defects.
| Component | Complaints | Share |
|---|---|---|
| Engine | 42 | 31% |
| Electrical System | 39 | 28% |
| Unknown Or Other | 21 | 15% |
| Service Brakes | 20 | 15% |
| Power Train | 18 | 13% |
| Fuel/Propulsion System | 17 | 12% |
| Steering | 15 | 11% |
| Forward Collision Avoidance | 7 | 5% |
| Tires | 5 | 4% |
| Suspension | 4 | 3% |
| Engine And Engine Cooling | 3 | 2% |
| Lane Departure | 3 | 2% |
One complaint can name several components, so shares add up to more than 100%.
| Version | Overall | Front | Side | Rollover |
|---|---|---|---|---|
| 2021 Chevrolet Blazer SUV AWD | 5/5 | 5/5 | 5/5 | 4/5 |
| 2021 Chevrolet Blazer SUV FWD | 5/5 | 5/5 | 5/5 | 4/5 |
Latest complaints, as filed
Owner-written and unverified by NHTSA.
Unknown Or Other - filed 2026-10-09
Steering assist reduced light came on, fan kept running after shutting off, brought to dealer to see if it was covered under the gm special coverage for thermostat, they say the radiator needs to be replaced for a leak. I looked it was leaking a bit on the top driverside corner, not actively leaking but a bit of corros...
Electrical System - filed 2026-10-01
The main instrument cluster where the speedometer and fuel gauge etc etc reside went blank during operation of the vehicle. I wasn't able to pull over safely until my destination was reached. Restarting the car seemed to "solve" the issue.
Service Brakes, Hydraulic - filed 2026-09-30
The contact owns a 2021 Chevrolet Blazer. The contact stated that while driving at an undisclosed speed and making a turn, the vehicle lost braking functionality. The brake pedal was depressed to the floorboard. After exiting the vehicle, the contact became aware of a fluid leak underneath the vehicle. The "BRAKE Failu...
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More for the 2021 Chevrolet Blazer
Complaints are reports filed by owners with the National Highway Traffic Safety Administration. NHTSA publishes them without verifying them, and counts rise with how many cars were sold, so compare years of the same model rather than different models. Crash ratings are NHTSA's own 5-Star Safety Ratings results.