I installed them on my 2002 Trailblazer and can't say anything bad about them. They are quiet, clean and last a long time. Ceramic pads are the best choice and were actually cheaper than other semi-metal pads. Semi-metallic pads aren't worth the extra noise, brake dust and shortened lifespan. I also recommend the Warehouse Deals option. I was fortunate to have a used option on the last few ACDelco items I bought here for extra savings.