2004 Chevrolet Trailblazer Ext: Reliability Data

Source: NHTSA — 306 complaints
306
Total Complaints
65,000mi
Median Mileage
ELECTRICAL SYSTEM
Top Issue
10
Crash Reports

When Do Complaints Happen?

Distribution of NHTSA complaints by vehicle mileage at time of report.

46,017 25th Percentile
65,000 Median Mileage
90,000 75th Percentile

What Fails?

Most reported component issues from NHTSA complaints.

ELECTRICAL SYSTEM
97
ELECTRICAL SYSTEM: INSTRUMENT CLUSTER/PANEL
50
FUEL SYSTEM, GASOLINE
24
POWER TRAIN:AUTOMATIC TRANSMISSION
11
EXTERIOR LIGHTING
10
VEHICLE SPEED CONTROL
9
FUEL/PROPULSION SYSTEM
9
ENGINE AND ENGINE COOLING:EXHAUST SYSTEM
6
EQUIPMENT
5
ENGINE AND ENGINE COOLING
5

Severity Assessment

10
Crashes
6
Fires
25
Injuries
0
Deaths

Sample Complaint Reports

"MY 2004 CHEVROLET, TRAILBLAZER HAS NO TRACTION. I WILL NOT EVEN GO THROUGH WET GRASS.*AK"
"2004 CHEVROLET TRAILBLAZER (FIANCE'S), FACTORY EQUIPPED WITH CONTINENTAL CONTITRAC TIRES. AT APPROXIMATELY 12,000 MILES, WE NOTICED A TREAD SEPARATION ON RIGHT REAR TIRE. (TWO DIFFERENT SPOTS ON TIRE). IT IS VERY OBVIOUS THAT THE TREAD IS PEELING BACK ON REST OF TIRE ALSO. AS OF THIS TIME, THE DEALE..."
"THE CONSUMER LOST CONTROL OF THE VEHICLE AT 60 MPH, GOING INTO A DITCH, THE SEAT BELT DID NOT SECURE THE CONSUMER, AND THE AIR BAG DID NOT DEPLOY. *JB *SC"

Source: NHTSA ODI Complaints Database. Names and identifying details omitted.

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