I recently found out how to change my cabin air filter in my Nitro. Open the goove box. Push the top sides of the glove box inward to drip the box. Pull up on the glove box to remove it (if needed). Pop the two side tabs on the cover and it will flip down. Pull the first filter out. Then pull the second filter (filters sit side by side) into the place of the first and pull it out. Then do the oposite for installing.