Great replacement for Escalade. It takes about 15 minutes to shut down, you'll need someone to hold the back cover while you swap it out. Take a small screwdriver and pry out the clips on the back of the ball seat at the top and bottom of the old gas strut/jack. The lid is very heavy. Lifting the back cover makes it easier to remove the old ones. Also prepare some lubricant to put on the ball before replacing it with a new one. New ones are simply inserted with clips. Simply hit with the palm of your hand or a small rubber mallet after aligning the ball with the socket.