AI Damage2005 Chevrolet Trailblazer EXT 370: common problems
Owners of the 2005 Chevrolet Trailblazer EXT 370 filed 237 complaints with NHTSA, most often about electrical system and fuel system. Details by component below, with sources.
Key figures
- Owner complaints
- 237
- involving a crash
- 7
What fails most often
- 1 Electrical system 43% of all complaints
- 2 Fuel system 35% of all complaints
- 3 Exterior lighting 6% of all complaints
- 4 Visibility 5% of all complaints
- 5 Fuel/propulsion system 5% of all complaints
- 6 Engine and cooling 4% of all complaints
- 7 Vehicle speed control 3% of all complaints
- 8 Air bags 3% of all complaints
- Electrical system: 101 complaints (43% of all), 1 of them with a crash reported by the owner.
- Fuel system: 83 complaints (35% of all), 1 of them with a crash reported by the owner.
- Exterior lighting: 15 complaints (6% of all).
- Visibility: 12 complaints (5% of all).
- Fuel/propulsion system: 11 complaints (5% of all).
Symptoms owners describe
How many of the 237 NHTSA complaints mention each symptom (automatic count from complaint text; one complaint can mention several).
Components owners complain about
| Component | Owner complaints | involving a crash | Technical service bulletins (TSB) |
|---|---|---|---|
| Electrical system | 101 | 1 | 0 |
| Fuel system | 83 | 1 | 0 |
| Exterior lighting | 15 | 0 | 0 |
| Visibility | 12 | 0 | 0 |
| Fuel/propulsion system | 11 | 0 | 0 |
| Engine and cooling | 10 | 0 | 0 |
| Vehicle speed control | 8 | 0 | 0 |
| Air bags | 7 | 4 | 0 |
| Structure | 6 | 1 | 0 |
| Powertrain | 5 | 0 | 0 |
| Tires | 5 | 1 | 0 |
| Engine | 4 | 0 | 0 |
| Equipment | 4 | 1 | 0 |
| Latches, locks, linkages | 4 | 0 | 0 |
What owners report
Short excerpts of NHTSA complaints in the original wording. These are owner statements not verified by NHTSA; personal data removed.
The contact stated that the driver was traveling approximately 65 mph, the power steering failed without warning. The vehicle was shaking violently making it extremely difficult for the contact to control the steering wheel.
This resulted in a frontal impact, but the airbags did not deploy. The vehicle is totaled.
The air bags failed to deploy. The contact sustained injuries and a police report was filed. The vin was unknown. The current and failure mileages were 25,000.
I truly believe the so called four wheel anti-lock brakes failed. The air bags never deployed either! After the crash the right front tire had a huge hole in the side wall and I am not too sure that this wasn't part of the problem. The torn part of the tire is sticking out and seems like it failed too.
Vehicle was involved in driver's side collision. Both doors on left side do not operate properly. Replacements parts are not being manufactured.
During the past two years I have re the luster and over head dome light flicker. Head lights very dim on driving also I have replaced on this vehicle the fuel throttle and sensor, a crank sensor a cam sensor, a temp sensor 4 power steering pumps new the power steering rack and assembly wheel hubs and bearings, all new…
I bought 2005 chevrolet trailblazer and the fuel gauge is defective. It is crazy to hear beep sounding all the time telling me the gauge is empty when I know for sure is not. I wish it could be fixed, because I have many others things in my plate that need to worry, I really don't need another one.
Driving 6 people to pittsburgh international airport at 3 am 8/5/17 on the parkway to catch a flight for a vacation when noticed low beam headlights were not working. Do not know how long I was driving before this was noticed.
When owners complained
NHTSA complaints by filing year. The peak shows at what age the problems show up most.
Comparison
By complaint count this model year ranks 1,712 of 36,659 model years in the NHTSA data (top 5% most complained about).
On average one model year of the Trailblazer EXT 370 has 58 complaints (5 years in the data). This year has 237, above average.
What to check before buying
- Electrical system. Scan all modules, test the battery and alternator, inspect connectors near the impact zone.
- Fuel system. Fuel smell, leaks, rough running, fuel-system codes.
- Exterior lighting. Headlamps, leveling, sensors and mounts after a frontal hit.
- Visibility. Wipers, mirrors, defrosters, cracked glass.
Other years of this model
Questions and answers
What are the most common problems with the 2005 Chevrolet Trailblazer EXT 370?
Owner complaints to NHTSA most often mention: electrical system, fuel system, exterior lighting. Total complaints: 237. The most frequent symptoms in complaint texts: fuel system, fuel smell (26%), warning lights, check engine (8%), A/C or heater (6%).
How many service bulletins (TSB) were issued for the 2005 Chevrolet Trailblazer EXT 370?
NHTSA lists 0 manufacturer service bulletins for this year. A bulletin tells dealers how to diagnose or fix a known issue; it is not a recall.
Should I buy a 2005 Chevrolet Trailblazer EXT 370 from a US auction?
Owner complaints describe defects, not crash damage. Before bidding, check the components listed above and review the lot photos: VinWind builds a report of visible and hidden damage by VIN.
Other 2005 models
Read also
Sources: public NHTSA data (USA): service bulletins and owner complaints; YouTube: links to videos credited to their authors. Complaints are owner statements not verified by NHTSA, and describe defects rather than crash damage. Data updated 2026-11-06.