Filter Filters Trailblazer Remove All Filters Price $100-$500 (2) Condition New (2) Brand Harmony Audio (2) Make Chevy (2) Compatible with 2002-2009 Chevy Trailblazer Harmony R124 Single 12" Custom... $235.99 2002-2009 Chevy Trailblazer Harmony A122 Single 12" Custom Sub Box & CXA800.1... $391.99