2003 Chevrolet Trailblazer Engine and Engine Cooling Problems
Owners have filed 65 complaints with NHTSA about engine and engine cooling problems on the 2003 Chevrolet Trailblazer, 7% of all complaints for this model year. Half of the reports with a mileage happened before 49,890 miles. The words owners use most often: “fan clutch” (34% of reports).
- 65engine and engine cooling complaints
- 49,890median miles at failure
- 1mention a crash
- 0mention an injury
- 0related recalls
- $1,100typical repair cost reported by owners
- 24%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.
- Fan clutch: mentioned in 22 of 65 complaints (34%)
- Service engine: mentioned in 5 of 65 complaints (8%)
How much does it cost to fix?
Owners who wrote down what they paid or were quoted put the typical engine and engine cooling repair on the 2003 Chevrolet Trailblazer at $1,100, and half of them between $1,050 and $1,350.
Based on 6 NHTSA complaints about this problem alone that state a repair bill or quote (2006–2009), 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 engine and engine cooling problems happen?
Based on 51 complaints that reported the odometer reading.
How serious are the reports?
Of 65 complaints, 1 mention a crash, 1 a fire.
Chevrolet Trailblazer engine and engine cooling complaints by model year
| Model year | Engine and Engine Cooling complaints | Share of that year | Median miles |
|---|---|---|---|
| 2023 Trailblazer | 3 | 4% | 95,626 |
| 2022 Trailblazer | 2 | 2% | 62,500 |
| 2021 Trailblazer | 2 | 1% | 69,425 |
| 2008 Trailblazer | 12 | 6% | 58,000 |
| 2007 Trailblazer | 12 | 2% | 52,500 |
| 2006 Trailblazer | 24 | 2% | 56,000 |
| 2005 Trailblazer | 44 | 3% | 54,550 |
| 2004 Trailblazer | 39 | 4% | 36,000 |
| 2003 Trailblazer | 65 | 7% | 49,890 |
| 2002 Trailblazer | 143 | 12% | 55,350 |
| 2001 Trailblazer | 5 | 25% | — |
| 2000 Trailblazer | 2 | 8% | 19,450 |
| 1999 Trailblazer | 1 | 25% | — |
When owners reported it
Related recalls (0)
No safety recall lists engine and engine cooling for the 2003 Chevrolet Trailblazer. A pattern of complaints does not always lead to a recall.
What owners report
Short excerpts of recent complaints, with personal details removed. Full reports are on NHTSA.gov.
The engine just dies while driving. There was an accident. *tr
This vehicle was purchased new in jun 2003. While still under warranty, various recalls were issued for steering, brake lights and rear hatch locking/handle assembly. Since then, the vehicle has been a lemon. Power steering pump replaced twice (first one i paid for, second independent and very…
Tl* the contact owns a 2003 chevrolet trailblazer. The contact stated that the vehicle would fail to start in colder temperatures. The vehicle was taken to the dealer who advised that there were no recalls. The dealer performed a diagnostic test and was unable to diagnose or duplicate a failure…
Frequently asked questions
Do all 2003 Chevrolet Trailblazers have engine and engine cooling problems?
No. NHTSA has 65 owner complaints about engine and engine cooling for the 2003 Chevrolet Trailblazer (7% 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 engine and engine cooling?
No recall currently lists engine and engine cooling for this vehicle.
At what mileage do engine and engine cooling problems start?
The median reported mileage is 49,890 miles: half of the reports with a mileage came before that.
How much does it cost to fix engine and engine cooling problems on the 2003 Chevrolet Trailblazer?
Owners report a typical cost of $1,100 (half paid between $1,050 and $1,350), from 6 complaints that state a repair bill or quote, in 2026 dollars.
What do owners say about engine and engine cooling problems on the 2003 Chevrolet Trailblazer?
The most frequent phrase is “fan clutch”, in 22 of 65 complaints, followed by “service engine” (5).
Other 2003 Chevrolet Trailblazer problems
See all 2003 Chevrolet Trailblazer problems or engine and engine cooling problems across all Trailblazer years.