2003 Chevrolet Trailblazer problems, complaints & recalls
Most-reported problem areas: Electrical System (126) · Electrical System: Instrument Cluster/Panel (74) · Fuel/Propulsion System (48)
🧭 Reliability snapshot
Compared against other Chevrolet Trailblazer model years — complaint volume vs the model's median year, recalls and severity. How we score →
🛣️ Complaints by mileage
701 NHTSA complaints that reported an odometer reading.
Safety recalls (0)
No recalls on record for this model year (campaigns announced since 2010).
Service bulletins (673)
Technical service bulletins are repair instructions manufacturers send dealers for known issues. Unlike recalls, the fix is not automatically free — but naming the bulletin at the service desk can save diagnosis time and support goodwill repairs.
Unknown Or Other 2025-07-18 · PIP5601C · Service Bulletin/Repair Instructions
this pi communicates the requirement to provide a pico file to receive diagnostic assistance from tac.
Unknown Or Other 2025-02-20 · PIP5358D · Service Bulletin/Repair Instructions
this preliminary information communication provides information to the technician about vehicles that have an unusual noise and is difficult to identify, isolate or pinpoint. technician should get record a sound clip or take a video of the noise for assessment by engineering. technician will need to
Electrical System 2024-10-25 · PIP4723J · Service Bulletin/Repair Instructions
this preliminary information communicates to the dealer the process for downloading or updating operating software for the tire pressure monitor, active fuel injector tester, multi media tester, pico scope, gr8 starting/charging tester and vehicle data recorder tools, giving website address and ste
Unknown Or Other 2024-09-12 · PIT5099H · Service Bulletin/Repair Instructions
this preliminary information communication provides information to the technician about vehicles that the heater-vent-air conditioning blows warm air. before calling general motors technical assistance center technician will need to have high and low pressures, outside temperature, humidity, and ven
Unknown Or Other 2024-09-12 · PIT5099H · Service Bulletin/Repair Instructions
this preliminary information communication provides information to the technician about vehicles that the heater-vent-air conditioning blows warm air. before calling general motors technical assistance center technician will need to have high and low pressures, outside temperature, humidity, and ven
Unknown Or Other 2024-09-06 · PIT3271P · Service Bulletin/Repair Instructions
this preliminary information communication provides information to the technician about changing the tire and wheel size on vehicles. general motors will only support a tire calibration for tires that have been sized, tested and designed for the vehicle in question and its applications. technician s
Showing the 6 most recent of 673 bulletins. Search all of them free at nhtsa.gov.
What owners report
2023-03-01 · Service Brakes“transmission doesn’t have 3rd or 4th gear. vehicle was smoking under hood. found out after buying it it has flood damage. mechanic said there was water in the transmission when inspected. vehicle needs catylic converter sensor and vehicle has bad ground wire. seller didn’t inform me of any of these issues and he said it was in good shape and very r…”
2022-01-12 · Power Train“while driving my trailblazer in a4wd on slippery road conditions, i went to pulled out of a parking lot and there was a loud sound like my whole front end fell out and the front end completely locked up. almost causing an accident. i had to dial back to 2hi quickly to unlock to front end. there was no light indicating any problems. been driving it …”
2021-03-16 · Service Brakes · 207,000 mi · 🔥 fire“wire harness coating falling apart almost caught my truck on fire got pictures and it triggers the brake light to stay on…”
2021-01-31 · Suspension · 179,000 mi“see attached complaint to general motors. i have additional documents where others have had the same problems with there similar year trailblazers.…”
2020-12-03 · Fuel/Propulsion System · 200,000 mi“it's leaking gas from lines on top of gas tank mechanic check it out i just can't afford it i'm disabled on fixed income raising my grandson…”
2020-05-12 · Fuel/Propulsion System · 145,000 mi“in 2018 we were having a fuel pressure issue and discovered that the icv had cracked around the gas tank. when i researched the issue i found there was a special coverage warranty for the issue and called the nearest chevy dealership. they told me that the coverage had expired a month earlier and they wouldn't honor the coverage but if we wanted t…”
2020-04-29 · Seats · 🔥 fire“my driver seat caught fire went to open the door to find a hole in my driver seat and the roof top burnt as well. i also had a new fuel pump put in due to it leaking gas after put it. it continues to leak.…”
2020-04-13 · Suspension · 338,000 mi“frame failed driver's side rear. causing unsafe drive condition. forward to reverse grinding caused by separation of frame.…”
2020-04-08 · Service Brakes · 200,000 mi“nothing has happening yet trying to get the recalls fixed have no idea how to go about it so started here, please tell me if not allowed or where i can get the information…”
2020-03-28 · Fuel/Propulsion System“chevrolet should do a current recall my 2003 trailblazer has leak needs to be fixed…”
Excerpts of consumer complaints filed with NHTSA, lightly truncated. They are owner statements, not verified findings.