Chevrolet / Trailblazer / 2021

2021 Chevrolet Trailblazer problems

Owners have filed 274 complaints about the 2021 Chevrolet Trailblazer with NHTSA. Electrical system accounts for 14.6% of them — narrowly the most common, ahead of power train at 13.9%. A further 19.3% were filed without a specific system named.

Complaints274

Crashes17

Fires5

Injuries11

Deaths0

What owners report breaking

Unknown or other 19.3% · 53

Electrical system 14.6% · 40

Power train 13.9% · 38

Engine 13.1% · 36

Service brakes 10.6% · 29

Fuel/propulsion system 5.8% · 16

Forward collision avoidance 5.1% · 14

Structure 2.9% · 8

Severity

Of those complaints, 17 describe a crash, 5 describe a fire and 11 report an injury.

Reading the numbers

Across the 9 model years of the Chevrolet Trailblazer in this data, 2021 draws comparatively few complaints; 2005 is the outlier year.

Filings are rising — 188 in the last three years against 79 in the three before. For a vehicle this age that usually points to a wear-related failure owners are hitting now.

The median odometer reading at the time of complaint was 20,000 miles.

In owners' own words

My 2021 chevy trailblazer rs is experiencing issues with the infotainment system and the onstar module they have stopped working and I have no backup camera and this issue is a safety concern to me and anyone who rides with me i have contacted both gm and onstar and got nowhere with them after I had a diagnostic test done on 6/18/26 they recommended replacement of the whole system Electrical system

Put vehicle into park, attempt to turn off car, get message shift to park after the vehicle is already in park. Vehicle keeps message shift to park not allowing car to fully turn off even though car is not started it keeps flashing message shift to park and system such as radio will not turn off as the car thinks it's not in park even though it already is. Electrical system

While driving, a service warning came on that reads "Service Power Steering" - when that came on, the brakes ceased to work properly and required significant force, causing a big delay in braking. It is not safe to drive due to the limited braking. This mirrors the recall situation for other 2021 Trailblazer models with the interrupted brake sensor. Electrical system

Verbatim from NHTSA filings. Complaints are unverified owner reports.

Safety recalls

Checking NHTSA for open recalls…

Other Chevrolet Trailblazer years

2004 1,302 complaints · 49.2% electrical system 2005 1,905 complaints · 32.6% electrical system 2006 1,440 complaints · 30.4% fuel system, gasoline 2007 965 complaints · 22.3% fuel system, gasoline 2008 263 complaints · 25.5% electrical system 2022 172 complaints · 19.2% power train

Compare all 9 model years →