2003 Chevrolet Trailblazer Power Train Problems
Owners have filed 103 complaints with NHTSA about power train problems on the 2003 Chevrolet Trailblazer, 11% of all complaints for this model year. Half of the reports with a mileage happened before 71,770 miles. The words owners use most often: “transfer case” (11% of reports).
- 103power train complaints
- 71,770median miles at failure
- 4mention a crash
- 2mention an injury
- 1related recalls
- $3,250typical repair cost reported by owners
- 51%of reports with a speed happened at 50+ mph
What owners describe
Phrases that appear unusually often in these complaints compared with complaints about other cars.
- Transfer case: mentioned in 11 of 103 complaints (11%)
- Fan clutch: mentioned in 8 of 103 complaints (8%)
How much does it cost to fix?
Owners who wrote down what they paid or were quoted put the typical power train repair on the 2003 Chevrolet Trailblazer at $3,250, and half of them between $1,500 and $3,650.
Based on 10 NHTSA complaints about this problem alone that state a repair bill or quote (2005–2013), converted to 2026 dollars with the U.S. consumer price index. These are owners' own figures, not a quote: they include dealer quotes, and owners who file complaints often faced larger repairs, so they can run higher than typical shop prices. Prices vary by shop, region and warranty coverage. How we calculate this.
At what mileage do power train problems happen?
Based on 77 complaints that reported the odometer reading.
How serious are the reports?
Of 103 complaints, 4 mention a crash, 1 a fire, 2 an injury.
Chevrolet Trailblazer power train complaints by model year
| Model year | Power Train complaints | Share of that year | Median miles |
|---|---|---|---|
| 2026 Trailblazer | 1 | 9% | 100 |
| 2025 Trailblazer | 6 | 24% | 700 |
| 2024 Trailblazer | 7 | 21% | 10,000 |
| 2023 Trailblazer | 10 | 14% | 44,962 |
| 2022 Trailblazer | 34 | 31% | 43,000 |
| 2021 Trailblazer | 41 | 21% | 32,000 |
| 2014 Trailblazer | 1 | 100% | 79,000 |
| 2009 Trailblazer | 1 | 4% | — |
| 2008 Trailblazer | 10 | 5% | 47,858 |
| 2007 Trailblazer | 15 | 2% | 65,000 |
| 2006 Trailblazer | 50 | 5% | 70,500 |
| 2005 Trailblazer | 51 | 3% | 77,349 |
| 2004 Trailblazer | 62 | 6% | 58,000 |
| 2003 Trailblazer | 103 | 11% | 71,770 |
| 2002 Trailblazer | 310 | 27% | 66,000 |
| 2001 Trailblazer | 5 | 25% | 80,000 |
| 2000 Trailblazer | 5 | 19% | 60,000 |
| 1999 Trailblazer | 2 | 50% | 67,000 |
When owners reported it
Related recalls (1)
Power train:automatic transmission
Problem: Certain sport utility vehicles fail to comply with the requirements of federal motor vehicle safety standard no. 114, "theft protection." these vehicles are equipped with a mechanical override that could allow the ignition key to be removed with the shift lever in a position other than park. In addition, these vehicles have an override that can allow the transmission to be shifted out of park with the ignition in the off position.
Risk: These overrides are not permitted unless the vehicle has a locking steering column.
Fix: Dealers will eliminate these conditions by disabling the overrides. Owner notification began on may 29, 2003. Owners who take their vehicles to an authorized dealer on an agreed upon service date and do not receive the free remedy within a reasonable time should contact chevrolet at 1-800-222-1020, gmc at 1-800-462-8782, oldsmobile at 1-800-442-6537, or hummer at 1-866-486-6376.
What owners report
Short excerpts of recent complaints, with personal details removed. Full reports are on NHTSA.gov.
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…
Tl* the contact owns a 2003 chevrolet trailblazer. While driving various speeds, the front end of the vehicle vibrated. The vibration was more pronounced while the engine was idling. Also, while ascending up a hill, the vehicle would not properly accelerate. The vehicle was taken to an independent…
Flasher module, transmission leak evening after replacement, upper control arms goes out after replacement.
Frequently asked questions
Do all 2003 Chevrolet Trailblazers have power train problems?
No. NHTSA has 103 owner complaints about power train for the 2003 Chevrolet Trailblazer (11% of the 901 complaints for this model year). Complaint data shows that the problem is reported, not how many of all cars sold are affected.
Was there a recall on the 2003 Chevrolet Trailblazer power train?
Yes: 1 safety recall list power train. Check your VIN on NHTSA.gov to see whether the fix was done on your car.
At what mileage do power train problems start?
The median reported mileage is 71,770 miles: half of the reports with a mileage came before that.
How much does it cost to fix power train problems on the 2003 Chevrolet Trailblazer?
Owners report a typical cost of $3,250 (half paid between $1,500 and $3,650), from 10 complaints that state a repair bill or quote, in 2026 dollars.
What do owners say about power train problems on the 2003 Chevrolet Trailblazer?
The most frequent phrase is “transfer case”, in 11 of 103 complaints, followed by “fan clutch” (8).
Other 2003 Chevrolet Trailblazer problems
See all 2003 Chevrolet Trailblazer problems or power train problems across all Trailblazer years.