I was installing the ZL1 Addons race cooldown override. Basically, a piece of plastic that holds down the hood position switch to fool the car and allow use of the tazer race cooldown with the hood open. This permits much faster cooling. After installing, I wasn't sure it was seated all the way down and thought it was holding up my hood ever so slightly. I tapped the piece down with a plastic mallet and the clips on the switch snapped.