J jimmy Member Jun 8, 2010 #1 what kind of spark plug should i use for my 2004 chevrolet trailblazer 2wd v6?i'm using ac delco now or bosch is better?
what kind of spark plug should i use for my 2004 chevrolet trailblazer 2wd v6?i'm using ac delco now or bosch is better?