2021 Chevrolet Blazer problems and complaints
Owners have filed 142 complaints with NHTSA about the 2021 Chevrolet Blazer. The most-reported areas: Engine (43), Electrical System (40), Unknown Or Other (23).
Key takeaways
- 142 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 | 43 | 30% |
| Electrical System | 40 | 28% |
| Unknown Or Other | 23 | 16% |
| Power Train | 20 | 14% |
| Service Brakes | 20 | 14% |
| Fuel/Propulsion System | 17 | 12% |
| Steering | 15 | 11% |
| Forward Collision Avoidance | 8 | 6% |
| 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%.
Parts for the 2021 Chevrolet Blazer
GarageDex's verified specs for this car. Each Buy button searches Amazon for that exact part.
- Battery
- Engine oil
- Oil filter
- Engine air filter
- Cabin air filter
- Wiper blades
- Headlight bulb
As an Amazon Associate we earn from qualifying purchases, at no extra cost to you.
| 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.
Power Train,engine - filed 2026-11-04
On [XXX], my 2021 Chevy Blazer broke down in the middle of traffic in a left turn lane when it tried to auto-restart. I was left stranded for 2 hours and had to call the local police to direct traffic around me. Upon towing to a local auto shop, and then another two to Carl Black GMC in Roswell, Georgia, I learned tha...
Unknown Or Other - filed 2026-10-23
In February 2023 we noticed coolant on our garage floor. Car was taken to GM dealership was told radiator seams were leaking. Replaced radiator February 14th 2023 and car had 14,597 miles cost covered by GM warranty. On October 8, 2026 vehicle taken to second GM dealership for driver assist not working be careful. The ...
Power Train - filed 2026-10-22
Torque converters are going out and causing people to need new transmissions. I was told by dealership that evaluated mine this is a known problem! I’ve also encountered others who have same issue with their cars.
Diagnose it yourself
As an Amazon Associate we earn from qualifying purchases, at no extra cost to you.
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.