AI Damage2003 Chevrolet Trailblazer EXT: common problems
Owners of the 2003 Chevrolet Trailblazer EXT filed 313 complaints with NHTSA, most often about fuel system and electrical system. Details by component below, with sources.
Key figures
- Owner complaints
- 313
- involving a crash
- 7
What fails most often
- 1 Fuel system 26% of all complaints
- 2 Electrical system 25% of all complaints
- 3 Powertrain 16% of all complaints
- 4 Visibility 8% of all complaints
- 5 Exterior lighting 7% of all complaints
- 6 Structure 6% of all complaints
- 7 Engine and cooling 5% of all complaints
- 8 Latches, locks, linkages 4% of all complaints
- Fuel system: 82 complaints (26% of all).
- Electrical system: 77 complaints (25% of all), 2 of them with a crash reported by the owner.
- Powertrain: 49 complaints (16% of all), 1 of them with a crash reported by the owner.
- Visibility: 26 complaints (8% of all).
- Exterior lighting: 23 complaints (7% of all).
Symptoms owners describe
How many of the 313 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) |
|---|---|---|---|
| Fuel system | 82 | 0 | 0 |
| Electrical system | 77 | 2 | 0 |
| Powertrain | 49 | 1 | 0 |
| Visibility | 26 | 0 | 0 |
| Exterior lighting | 23 | 0 | 0 |
| Structure | 20 | 0 | 0 |
| Engine and cooling | 16 | 0 | 0 |
| Latches, locks, linkages | 13 | 0 | 0 |
| Service brakes | 13 | 0 | 0 |
| Suspension | 12 | 0 | 0 |
| Fuel/propulsion system | 7 | 0 | 0 |
| Vehicle speed control | 7 | 0 | 0 |
| Steering | 6 | 0 | 0 |
| Air bags | 5 | 3 | 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 frame of the vehicle was bent and there was a lot of damage to the under of the vehicle, but the airbags did not deploy. The vehicle has been deemed a total loss by my insurance company.
The vehicle went into a ditch, then flipped several times however, the airbags did not deploy. Seat belts were in use and injuries were sustained. The vehicle was towed first to a wrecker service then it was taken to an insurance company. No inspection as to why the air bags did not deploy.
Drivers seat will move to the "exit posistion" while driving. The last time this happened the driver was pulled away from the brake pedal while making a right hand turn and drove off the road. The vehicle has been taken to the dealership several time for repair with no luck.
Vehicle ran into a guard rail and rolled down into a ditch. Owner contacted the dealer, who said it was the fault of the driver. Later, dealer contacted the owner, and informed him that the 4-wheel drive key was broken.
Vehicle shut down while driving on the freeway, ignition locked. Consumer shook the steering column and it started. There was a multiple vehicle collision since the vehicle shut down at 65 mph.
I remember officials on the scene were surprised our air bags did not deploy and encouraged us to look into that. I am scared to have the car back. If a head-on collision like that will not deploy my airbags, what will? Can I trust them if I'm in an even more severe accident.
Makes my windows fog up and not defrost. I have done the reset procedure and hear things moving but it doesn't fix it. The blower in the ball seat and third row is hit or miss for even working at all.
First the car would not start all the time with the key, then the a/c stoped working, next was the fuel pump, then the injectors. I checked everything it could be. I was driving with my kids down the highway when my car just died lost power steering so it was hard to get off the road fast.
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 1,292 of 36,656 model years in the NHTSA data (top 4% most complained about).
On average one model year of the Trailblazer EXT has 216 complaints (4 years in the data). This year has 313, above average.
What to check before buying
- Fuel system. Fuel smell, leaks, rough running, fuel-system codes.
- Electrical system. Scan all modules, test the battery and alternator, inspect connectors near the impact zone.
- Powertrain. Shift quality under load, harsh shifts, transmission codes, CV joints.
- Visibility. Wipers, mirrors, defrosters, cracked glass.
Other years of this model
Questions and answers
What are the most common problems with the 2003 Chevrolet Trailblazer EXT?
Owner complaints to NHTSA most often mention: fuel system, electrical system, powertrain. Total complaints: 313. The most frequent symptoms in complaint texts: fuel system, fuel smell (15%), warning lights, check engine (10%), rust, corrosion (9%).
How many service bulletins (TSB) were issued for the 2003 Chevrolet Trailblazer EXT?
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 2003 Chevrolet Trailblazer EXT 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 2003 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 2026-11-05.