2004 Chevrolet Trailblazer Ext 370: 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
"WENCH HOLDING SPARE TIRE ON 2002 CHEVY TRAILBLAZER WAS STUCK AND WOULD NOT LOWER THE TIRE. HAVING A FLAT TIRE IS BAD ENOUGH BUT BEING TOLD THAT THEY WOULD HAVE TO CUT AND DESTROY THE WENCH MECHANISM IN ORDER GET THE SPARE TO PUT IT ON IN PLACE OF THE FLAT ONE WAS NOT GOOD NEWS. I TOLD AAA TO PROCE..."
"MY VEHICLE HAS NUMEROUS TIMES QUIT RUNNING (SINCE PURCHASE 2004) BY FIRST BEING UNSTABLE AND ROUGH ENGINE IDLE. IT'S MORE NOTICEABLE AFTER DRIVING FOR LONG PERIOD OF TIME ON HIGHWAY AND THEN COMING TO A FULL STOP AT AN EXIT; VEHICLE WILL SURGE AT LOW SPEED/SHUDDER AND WILL STOP RUNNING. THE ONLY W..."
"MY 2004 CHEVY TRAILBLAZER OIL, GAS AND BATTERY GAUGES HAVE ALL STOPPED WORKING. WHEN I TURN ON MY HEATED SEATS THEY SMELL LIKE THEY'RE BURNING!! I HAVE READ 100'S OF COMPLAINTS OF SIMILAR STORIES WITH SAME PROBLEMS. WE NEED A RECALL, IT IS NOT SAFE!!!!! *TR"
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.
Who Files Complaints?
Chevrolet Trailblazer Ext 370 — 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
Copy this code to embed on your website: