Chevrolet Avalanche 1500 problems by year
868 complaints across 5 model years, 2002–2007. 2003 draws the most at 213; 2007 the fewest at 142.
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.