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Year Make/Model Repair Frequencysuccessful repair trips per 100 cars per year Compared to all models for the same year  
2008 Chevrolet TrailBlazer 26 TrailBlazers, 8.7 months of data per TrailBlazer, average 87900 miles85
70% 70% Fewest Trips Most Trips
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2007 Chevrolet TrailBlazer   17 TrailBlazers, 7.8 months of data per TrailBlazer, average 96800 miles

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2006 Chevrolet TrailBlazer 26 TrailBlazers, 7.5 months of data per TrailBlazer, average 118700 miles105
80% 80% Fewest Trips Most Trips
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2005 Chevrolet TrailBlazer   20 TrailBlazers, 7.6 months of data per TrailBlazer, average 113200 miles

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or 20 TrailBlazers, 7.6 months of data per TrailBlazer, average 113200 miles

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2004 Chevrolet TrailBlazer   21 TrailBlazers, 9.3 months of data per TrailBlazer, average 120400 miles

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2003 Chevrolet TrailBlazer 28 TrailBlazers, 7.7 months of data per TrailBlazer, average 147500 miles123
80% 80% Fewest Trips Most Trips
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2002 Chevrolet TrailBlazer   16 TrailBlazers, 8.3 months of data per TrailBlazer, average 136300 miles

* Small sample size.
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or 16 TrailBlazers, 8.3 months of data per TrailBlazer, average 136300 miles

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See reliability results for all Chevrolet vehicles.

Chevrolet TrailBlazer Reliability

You won't find Chevrolet TrailBlazer reliability information like this anywhere else. Actual repair frequencies, not just vague dots. So you can tell how much the Chevrolet TrailBlazer truly differs from competing car models in reliability.

These stats are promptly updated four times a year, to much more closely track Chevrolet TrailBlazer reliability as the cars age. Others tell you how reliable the Chevrolet TrailBlazer was a year ago, when the cars were a year younger and had 12,000 fewer miles on them. Only TrueDelta tells you how reliable the Chevrolet TrailBlazer has been recently.

What People Are Saying about Reliability and the Chevrolet TrailBlazer

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What Our Members Are Saying about the Reliability and Durability of the Chevrolet TrailBlazer

Chevrolet TrailBlazer Reliability and Durability: Pros
YearBody/PowertrainComment
2008 4dr SUV 285-horsepower 4.2L I6
4-speed automatic 4WD w/low range
Have owned it for better than six months and nothing has had to be repaired.
2008 4dr SUV 285-horsepower 4.2L I6
4-speed automatic RWD
So far this truck gives me no reason to believe it will be any less reliable than my 2002. It tows just as well, and there seem to be many strides from GM to make it better in other areas. So far, so good.
2007 4dr SUV 285-horsepower 4.2L I6
4-speed automatic 4WD w/low range
Our first was a 2003. We only experienced a taillight that was replaced under recall and foam baffles in the front fenders that slid out of place. And knock the playskool interior, but it stands up better than many more stylish competitors.
2006 4dr SUV 285-horsepower 4.2L I6
4-speed automatic 4WD w/low range
A durable vehicle was an important factor in the purchase of this vehicle.
2005 4dr SUV 285-horsepower 4.2L I6
4-speed automatic 4WD w/low range
I am growing very weary of replacint parts almost every month, but, it has over 155,000 miles and most of the Items replaced would be considered normal wear items. Brakes, Rotors, etc.
2004 4dr SUV 285-horsepower 4.2L I6
4-speed automatic 4WD w/low range
This is not a bad vehicle, but in general it has required a more repairs than many other vehicle than I have owned. There are known weaknesses with every vehicle and the internet has made finding them very simple. The good news is that if you are inclined to do so, you can make most of the repairs yourself. The bad news is that some of the things are complicated and I would consider them as design flaws, but almost every vehicle has something that sucks. If you were not in a position to do so however you may be better off with something else, like a Honda or a Toyota It is a comfortable almost full size SUV that gets decent fuel economy. It has real 4WD including low range. Every town has a Chevy garage. Parts are not ridiculously expensive. Now that I have done most of the repairs it is a decent truck.
2003 4dr SUV 285-horsepower 4.2L I6
4-speed automatic 4WD w/low range
4 wheel drive gets me through most unplowed roads in winter. Not afraid to drive in one.
Chevrolet TrailBlazer Reliability and Durability: Cons
YearBody/PowertrainComment
2007 4dr SUV 285-horsepower 4.2L I6
4-speed automatic RWD
The powertrain will last much longer than the rest of the car. Interior wear and random parts failures will leave it undriveable before the engine & transmission quit.
2004 4dr SUV 285-horsepower 4.2L I6
4-speed automatic 4WD w/low range
Complicated electrical system