2009 Chevrolet Trailblazer: Reliability Data
When Do Complaints Happen?
Distribution of NHTSA complaints by vehicle mileage at time of report.
What Fails?
Most reported component issues from NHTSA complaints.
Severity Assessment
Sample Complaint Reports
"I HAVE BEEN SEEING THAT WHEN COMING TO A STOP MY VEHICLES IDLE STAYS UP WHEN IT SHOULD BE KICKING DOWN TO A LOWER RPM TO SLOW THE VEHICLE. I HAVE TO SMASH ON THE BRAKE PEDAL AT TIMES B/C IT FEELS LIKE THE TRUCK ISN'T STOPPING AND THE ENGINE RPMS STAY HIGH. I HEAR THIS IS A VERY COMMON PROBLEM AND HE..."
"MY BLOWER IN MY 2005 CHEVY TRAILBLAZER STOPPED WORKING. THE WIRES MELTED TOGETHER ON THE RESISTER, MELTING THE ENTIRE PLUG. I HAVE SEEN WHERE THIS IS A COMMON PROBLEM CHEVY AND GMCS HAVE. THIS IS A NEEDED FUNCTION AND IF THERE IS A COMMON PROBLEM, WHY AREN'T THESE COMPANIES DOING SOMETHING TO REM..."
"I WAS DRIVING 2009 CHEVY TRAIL BLAZER AND WAS T-BONED BY A SPEEDING BUS ON MY SIDE, I HAD MY WIFE AND 2 GIRLS WITH ME, ALL WERE WEARING SEAT BELT AND ONE OF MY GIRLS WAS IN HER CAR SEAT ALSO. THE VEHICLE WAS TOTALED, ALL AIRBAGS FAILED TO DEPLOY IN THE VEHICLE. I SUFFERED MAJOR INJURIES AND I WAS OU..."
Source: NHTSA ODI Complaints Database. Names and identifying details omitted.
When Were Complaints Filed?
Number of complaints by the year the issue occurred.
When Does Each Component Fail?
Median mileage at complaint for top components.
Where Are Complaints Coming From?
Top states by complaint count.
Chevrolet Trailblazer — Other Years
See how this model compares across different model years.
Data source: View this vehicle on NHTSA.gov | NHTSA ODI Complaints Database. Public domain.
Methodology: Complaint counts and mileage distributions are computed directly from consumer-reported NHTSA complaints. This data represents reported issues, not failure rates — vehicles without complaints are not represented. Full methodology.
Data through: 2026-03-28
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