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Exterior lightingPart report

2003 Chevrolet Trailblazer EXT Exterior lighting Problems

Complaints
23about this part
Share
7%of 313 total for the year
Median mileage
60,128miles
Trend
StableComplaints filed in the last 3 full calendar years are within 25% of the 3 years before.

NHTSA recorded 23 complaints about the exterior lighting of the 2003 Chevrolet Trailblazer EXT, 7% of the 313 complaints for this model year. Where a mileage was given, the median is 60,128 miles. 1 recall campaign on record is filed under a similar system.

Example complaints

Selected from NHTSA records; personal details are removed. They are consumer reports, not findings.

“Purchased a 2003 chevy trailblazer-ext lt in dec 2002 from the dealer, team Chevrolet in pasadena. Since purchasing the vehicle, there's been several recalls, one in particular that keeps recurring are the brake lights keep burning, the dealer changed both units but it keeps burning out. I got tired of taking it to the dealer, so I purchased new bulbs and looked into replacing them myself. …”

NHTSA complaint #10315703, filed 2010-03, 89,500 miles

“Continuing failure of rear lighting (back-up, brake, driving, and turn). Typically, I have to replace a bulb about every 6 weeks, and the entire left assembly has been replaced twice since the car was new. Bulbs and sockets melt until they are inoperable. Similar issue with front headlights, although only about once a year. Old bulbs and assembly disposed of, but I'm sure more melted ones will be available soon.”

NHTSA complaint #10383402, filed 2011-02, 5,000 miles

“While driving down highway started to hear a banging noise turns out it was my plastic that's above my hatch where my 3 red brake light is it hasn't fallen off yet just loose and flopping around I have read this happens to a lot of trailblazer this should be a safety recall on this and even you guys are aware of the problem the molding which is double sided tape is not a proper use for this the company should have to fix it is it gonna take one flying off and causing a death and major accident before anyone does something?”

NHTSA complaint #10558291, filed 2014-01, 156,000 miles

“My right front headlight was burned out, and upon investigation, I discovered that the plug and bulb socket had melted along with several inches of wire. It was repaired after some back and forth discussion with the Chevrolet dealer. I thought this incident was strange, but thought it was a random incident until I read on a web forum that this appears to be a common occurrence.”

NHTSA complaint #10110139, filed 2005-02, 21,178 miles

“Every few days when I use the turn signal all lights will flash as if the hazard warning lights have been activated. This is exactly like the GM recall for the 2003 Chevrolet trailblazer however my VIN is outside of the recall.”

NHTSA complaint #10235924, filed 2008-07, 98,000 miles

Related recalls

Related service bulletins

Exterior lighting: other model years

YearComplaintsShare of year
2006116%
2004135%
2003237%
20021010%

Other parts of the 2003 Chevrolet Trailblazer EXT

Fuel system
89 complaints
Electrical system
77 complaints
Transmission and drivetrain
49 complaints
Visibility (wipers, defrost, mirrors)
26 complaints
Body and structure
20 complaints
Engine cooling
16 complaints
Brakes
13 complaints
Latches, locks and linkages
13 complaints
Suspension
12 complaints
Other or unknown
7 complaints
Vehicle speed control
7 complaints
Steering
6 complaints

← All problems reported for the 2003 Chevrolet Trailblazer EXT

About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 31, 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