FM can not hear even if volume is up

If the am works, the fm problem is in the radio. Unfortunately General Motors decided they wanted all the repair business for their two grossly over-priced repair centers so they have refused to allow us to buy radio service manuals or parts since the '94 model year. The fm problem is not real common so I would head to a salvage yard to find a replacement radio, but be aware that GM had a 100 percent failure rate of their cd mechanisms throughout the mid to late '90s. If you plan on keeping the car for more than a few years, you might be better off buying a rebuilt radio through the dealer or from one of the many web sites selling them. You can also find new, (never sold) radios, but try to get the same model number as your old one. GM had a huge list of model numbers that were all basically the same but they had subtle differences to modify the tone response for the shape of the vehicle. Chrysler did that by using different speakers with amps on them. If you get a different model number, you might very well not even notice the difference in sound.