GM Storm/Spectrum 1985-1993 Repair Guide




The antenna used on Geo vehicles is mounted in the left front pillar. To remove the antenna, simply disconnect the antenna lead wire from the radio, remove the mounting screw and remove the antenna from the body panel. To install a new antenna, the wire must be fed through the mounting hole and pulled out from under the trim panel. Connect the lead wire to the radio.

On some models, once a new antenna is installed, the radio must be trimmed. The trim adjustment is located on the back panel of the radio. Set the radio to a weak AM station around 1400 on the dial. Use a trim adjusting tool to fine tune the radio for the best reception.