Chevrolet Trailblazer EXT problems by year
1,070 complaints across 4 model years, 2002–2006. 2003 draws the most at 406; 2002 the fewest at 120.
Read this first
Complaint volume tracks how many cars were sold as much as how reliable they were. A popular model year will always look worse than a rare one. Compare the dominant failure system between years rather than the raw totals.