Wish I would have done this sooner. Such an easy upgrade and makes the rear end looks 10x better. The wiper arms that the 06 and earlier Trailblazers got is junk and hideous. Mine would only wipe half the rear glass now the new wiper wipes the whole window!!! Most difficult part was getting the lower trim piece off on the inside, I felt like I was going to break it in half but once I got a couple of clips loose it pretty much fell out.