2003 Chevrolet Trailblazer 360 Electrical system Problems
- Complaints
- 5about this part
- Share
- 45%of 11 total for the year
- Median mileage
- 140,000miles
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 5 complaints about the electrical system of the 2003 Chevrolet Trailblazer 360, 45% of the 11 complaints for this model year. Where a mileage was given, the median is 140,000 miles. 1 a fire, according to the filers.
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.
“Shut off vehicle , got out of drivers side. Shut door and as I closed door all my locks on door locked down. My grandaughter was strapped into a car seat in the back seat and we were unable to open doors to get her out. We had to contact police and they were unable to get doors to unlock. The locks would not work the windows would not work , the car was completely locked down . …”
NHTSA complaint #10669523, filed 2015-01, 140,000 miles“The contact owns a 2003 Chevrolet TRAILBLAZER 360. While driving at any speed, the instrument panel remained illuminated and flashed different warnings for several hours until the engine was turned off. The contact stated that the failure recurred several times for approximately three years. The vehicle was taken to a local dealer where it was diagnosed that a modular failure occurred with the instrument panel. The dealer stated that the vehicle was not included in a recall. The manufacturer was notified. The vehicle was not repaired. The failure mileage was 150,000.....updated 03-31-16”
NHTSA complaint #10787971, filed 2015-11, 150,000 milesRelated service bulletins
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Electrical system: other model years
Other parts of the 2003 Chevrolet Trailblazer 360
3 complaintsAir bags
2 complaintsExterior lighting
1 complaintsSuspension
1 complaintsVisibility (wipers, defrost, mirrors)
1 complaints
← All problems reported for the 2003 Chevrolet Trailblazer 360
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