2003 Chevrolet Trailblazer EXT 370 Body and structure Problems
- Complaints
- 1about this part
- Share
- 7%of 14 total for the year
- Median mileage
- 100,000miles
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 1 complaints about the body and structure of the 2003 Chevrolet Trailblazer EXT 370, 7% of the 14 complaints for this model year. Where a mileage was given, the median is 100,000 miles.
Fewer than 15 complaints name this part, so treat the figures as a rough indication only.
Example complaints
Selected from NHTSA records; personal details are removed. They are consumer reports, not findings.
“The contact owns a 2003 Chevrolet TRAILBLAZER EXT 370. While driving various speeds, the hatch door ajar light illuminated and failed to latch without warning. The vehicle was not diagnosed or repaired. The manufacturer was notified of the failure. The approximate failure mileage was 100,000.”
NHTSA complaint #10705916, filed 2015-04, 100,000 milesRelated service bulletins
- 10190934Jan 1, 2014Underbody Component Corrosion The following information may be helpful when addressing underbody component corrosion with customers. Some customers may comment that one or more…
- 10190933Jan 1, 2014Underbody Component Corrosion The following information may be helpful when addressing underbody component corrosion with customers. Some customers may comment that one or more…
Body and structure: other model years
Other parts of the 2003 Chevrolet Trailblazer EXT 370
6 complaintsFuel system
3 complaintsExterior lighting
2 complaintsVisibility (wipers, defrost, mirrors)
2 complaintsElectronic stability control
1 complaintsEngine
1 complaintsEngine cooling
1 complaintsTires
1 complaintsWheels
1 complaints
← All problems reported for the 2003 Chevrolet Trailblazer EXT 370
About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 29, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.
To check a specific vehicle for open recalls, use its VIN at nhtsa.gov/recalls. Methodology