Unfortunately, my understanding is that this is a dealer replaceable part, the front bumper needs to come off. Definitely not happy when I read this, but hoping that it doesn't happen more than once while I own the car. I think it sucks that it was designed this way. I actually may have thought twice about buying the car. Don't get me wrong, I love my CTS, but it ticks me off when I may have to spend big money to change a $10 part.