For Cobalt/G5 and ION cars, first take off the trim panel above the accessories, then remove the screws holding the radio in place and pull it out from the dashboard. After unplugging the radio, detach three connections from its back: antenna cable, electrical wires, and ground wire. When installing new speakers on the front doors, start with the top speakers. Uncover them by taking off the upper door trim panel, disconnecting the electrical connector attached to the tweeter, and giving its two locking hooks just enough space to pull the tweeter out of its pull handle. Installation follows the reverse process. To remove lower speakers, first take off the front door trim panel, unscrew the speaker mounting screws, then disconnect the electrical connector when you pull out the speaker. Again, installation is the reverse of removal. Unscrew the mounting screws, remove two panels on both sides, and then pushpins holding the rear window shelf. Pull up the shelf for access to the rear speakers when rear seatback is down. Remove mounting screws and draw out the speakers. To take out the A-pillar speakers, first crack off the trim panel, disconnect the tweeter's electrical cord, and grab the mounting screws before easing the speakers off. Installation is the reverse of removal.