2021 Chevrolet Trailblazer problems and recalls

Owners filed 109 complaints on the 2021 Chevrolet Trailblazer in the last three full years, out of 191 on record. The most cited component is the Unknown Or Other.

191
Complaints
4
Recalls
7
Crash reports
3
Fire reports
5
Injuries
50.5
Severity index

Severity index 50.5 Medium. The index weights crashes, fires, injuries and fatalities per 100 complaints. How it is calculated.

Middle half of all tracked vehiclesThis vehicle: 50.5p25 46p75 80cleanestworst
Severity index against the quartile range for all tracked vehicles.

Ranked 61 of 92 by severity index among 2021 vehicles with at least 40 complaints, highest first. 34% of those vehicles scored lower. Full 2021 ranking.

Components cited in complaints

Unknown Or OtherUnknown Or Other: 53 complaints (27.7%)53 28%Electrical SystemElectrical System: 40 complaints (20.9%)40 21%Power TrainPower Train: 39 complaints (20.4%)39 20%EngineEngine: 37 complaints (19.4%)37 19%Service BrakesService Brakes: 31 complaints (16.2%)31 16%Fuel/Propulsion SystemFuel/Propulsion System: 17 complaints (8.9%)17 9%Forward Collision Avoid…Forward Collision Avoidance: 10 complaints (5.2%)10 5%StructureStructure: 8 complaints (4.2%)8 4%
A single complaint can cite more than one component, so shares total over 100%.
ComponentComplaintsShare of complaints citing it
UNKNOWN OR OTHER5327.7%
ELECTRICAL SYSTEM4020.9%
POWER TRAIN3920.4%
ENGINE3719.4%
SERVICE BRAKES3116.2%
FUEL/PROPULSION SYSTEM178.9%
FORWARD COLLISION AVOIDANCE105.2%
STRUCTURE84.2%

Complaints filed per year

024482020: 62021: 202022: 172023: 152024: 462025: 482026: 39 (partial year)2021222324254826
Complaints by the calendar year they were filed. The hatched bar is the current year to date.
YearComplaints
20206
202120
202217
202315
202446
202548
2026 (year to date)39
Filings in 2023 to 2025 ran 2.5x those in 2020 to 2022 (109 against 43).

Recall campaigns

CampaignReportedComponentSummary
20V53700003/09/2020SEATS:CRITICAL FASTENERSGeneral Motors LLC (GM) is recalling certain 2020 Buick Encore GX and 2021 Chevrolet Trailblazer vehicles. The rear attachment bolts of one or both front seats may not have been installed.
20V29500021/05/2020TIRESGeneral Motors LLC (GM) is recalling certain 2021 Chevrolet Trailblazer vehicles factory-equipped with optional 17-inch sport terrain tires. The certification label on these vehicles does not provide the tire size and cold tire pressure information for front and rear tires, as r
20V58800024/09/2020SERVICE BRAKESGeneral Motors LLC (GM) is recalling certain 2020 Chevrolet Corvette and Cadillac CT4, CT5 and XT4, 2021 Chevrolet Trailblazer, and 2020-2021 Buick Encore GX vehicles. Sensor connection contamination in the electronic brake boost system may cause an interruption of communication
21V44000010/06/2021EQUIPMENT:MECHANICAL:ACCESSORY SCISSOR/SCREW/BOTTLE JACK/LIFT:STANDGeneral Motors, LLC. (GM) is recalling certain 2020-2022 Buick Encore GX and 2021-2022 Chevrolet Trailblazer vehicles. The emergency jack, if not positioned as directed in the vehicle owner's manual, can fracture while in use.

Other Chevrolet Trailblazer model years

Severity index for every other model year on file. Compare all 5 years side by side.

Source. NHTSA public complaint and recall APIs (api.nhtsa.gov), retrieved 2026-09-07. Complaints are unverified consumer reports. Totals vary with units sold and years on the road. Not affiliated with NHTSA or any manufacturer.