2021 Chevrolet Trailblazer problems and complaints
Owners have filed 193 complaints with NHTSA about the 2021 Chevrolet Trailblazer. The most-reported areas: Unknown Or Other (54), Electrical System (41), Power Train (40).
Key takeaways
- 193 owner complaints on file with NHTSA.
- 7 involve a crash, 3 a fire, 5 reported injuries.
- Complaints are unverified owner reports; recalls are confirmed defects.
| Component | Complaints | Share |
|---|---|---|
| Unknown Or Other | 54 | 28% |
| Electrical System | 41 | 21% |
| Power Train | 40 | 21% |
| Engine | 38 | 20% |
| Service Brakes | 31 | 16% |
| Fuel/Propulsion System | 17 | 9% |
| Forward Collision Avoidance | 10 | 5% |
| Structure | 8 | 4% |
| Steering | 6 | 3% |
| Vehicle Speed Control | 5 | 3% |
| Visibility/Wiper | 4 | 2% |
| Back Over Prevention | 3 | 2% |
One complaint can name several components, so shares add up to more than 100%.
| Version | Overall | Front | Side | Rollover |
|---|---|---|---|---|
| 2021 Chevrolet Trailblazer SUV FWD Later Release | 5/5 | 5/5 | 5/5 | 4/5 |
| 2021 Chevrolet Trailblazer SUV AWD Later Release | 5/5 | 5/5 | 5/5 | 4/5 |
| 2021 Chevrolet Trailblazer SUV FWD Early Release | 4/5 | 4/5 | 5/5 | 4/5 |
| 2021 Chevrolet Trailblazer SUV AWD Early Release | 4/5 | 4/5 | 5/5 | 4/5 |
Latest complaints, as filed
Owner-written and unverified by NHTSA.
Unknown Or Other - filed 2026-09-15
2021 Chevy Trailblazer has a shift to park sensor issue. Car is in park and the sensor does not recognize that it is in park and displays a safety message to place car in park and continues to beep. Takes numerous attempts of taking car out of park and back into park to get it to recognize that the shifter is now in ...
Power Train,electrical System,engine - filed 2026-09-07
Dear Chevy, I am reaching out to you again because I am desperately requesting immediate assistance with my vehicle, which has now become an extremely serious and dangerous safety concern. On Friday, [XXX], I had my vehicle towed to the dealership because of the ongoing mechanical issues I have been experiencing. I w...
Power Train,engine,fuel/Propulsion System - filed 2026-09-03
Original Owner of 2021 Chevy Trailblazer LT. Purchased new in April 2021. Vehicle has a history of major powertrain issues, starting with Check Engine light during its first year of ownership, culminating in a complete turbocharger replacement in December 2025. This only as a result of my research, after many visits t...
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More for the 2021 Chevrolet Trailblazer
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.