2005 Chevrolet Trailblazer EXT 370 Exterior lighting Problems
- Complaints
- 15about this part
- Share
- 6%of 237 total for the year
- Median mileage
- 83,400miles
- Trend
- StableComplaints filed in the last 3 full calendar years are within 25% of the 3 years before.
NHTSA recorded 15 complaints about the exterior lighting of the 2005 Chevrolet Trailblazer EXT 370, 6% of the 237 complaints for this model year. Where a mileage was given, the median is 83,400 miles.
Example complaints
Selected from NHTSA records; personal details are removed. They are consumer reports, not findings.
“I have 2005 Chevrolet trailblazer 4wd ext ls 4.2 liter. I noticed over past 3 years that I be at drive through for burgers and etc. The car would cut off. I did not think much of it at the time. It has gotten critically worse. It would cut off in middle of the highway, drive throughs and etc. During the past two years I have re the luster and over head dome light flicker. …”
NHTSA complaint #11100524, filed 2018-06, 81,000 miles“All of a sudden headlights stopped working. I have changed the bulbs, fuses and relay. Had this problems checked out several times, no one can find a solution to why they don't work. I was on the highway coming home when they just stopped working, I had to put my high beams on to be able to get home safely.”
NHTSA complaint #10606763, filed 2014-06, 135,000 miles“I have had the following problems with my 2005 chevy trailblazer ext ls: 2008: fuel sensor failure, running board fell off 2009: head and tail lights going out frequently, windows would get stuck- could not go up or down- all dash lights flashing, car stalling out- needed circuit board replaced. Anti-theft non-functioning. …”
NHTSA complaint #10376545, filed 2011-01, 74,000 miles“There is already a recall out for the 2006 model year, but I know that mine is part of it. I have a 2005 trailblazer and the headlights keep intermittently going out as I am driving down the road. This problem as happened to me before in the past and I was able to finally remedy the issue by replacing the relay. The problem has now returned and I have even been pulled over multiple times for it. After doing a quick google search today I discovered that there are tons!!!!! Of people with the same issue going back as far as 2002. …”
NHTSA complaint #10822072, filed 2016-01, 90,000 miles“2005 ext trailblazer rear plastic molding containing the 3rd brakelight separated from the window at least 3x since I have owned this vehicle. Once even falling completely off severing the wires and landing in the roadway. I noticed the first separation less than 6 months after getting vehicle brand new. It has separated again and dealer says that it is not covered under warranty because it is considered cosmetic even though the vehicle was still under lease for another year. …”
NHTSA complaint #10274028, filed 2009-06, 4,000 milesRelated service bulletins
- 10249011Jan 12, 2024This informational bulletin provides information for dealers/technicians on Headlamp, Tail Lamp, License Lamp or Fog/Driving Lamp Damage.
- 10232136Feb 15, 2023This service bulletin provides information for dealers/technicians on Exterior Lamp Condensation and Water Leaks and Replacement Guidelines.
- 10019186Feb 16, 2006Ipc, interior lights and/or headlamps flicker. *ak fb2
Exterior lighting: other model years
Other parts of the 2005 Chevrolet Trailblazer EXT 370
101 complaintsFuel system
94 complaintsVisibility (wipers, defrost, mirrors)
12 complaintsEngine cooling
10 complaintsVehicle speed control
8 complaintsAir bags
7 complaintsBody and structure
6 complaintsTires
5 complaintsTransmission and drivetrain
5 complaintsEngine
4 complaintsEquipment
4 complaintsLatches, locks and linkages
4 complaints
← All problems reported for the 2005 Chevrolet Trailblazer EXT 370
About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Nov 1, 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