; Kim Thayil Active : 1984 â `` 1997 Instruments : guitar Release contributions : all Soundgarden releases Kim Thayil was a member of the original band formed in 1984 . ; Kim Thayil Active : 1984 â `` 1997 , 2010 â `` present Instruments : guitar Release contributions : all Soundgarden releases Kim Thayil was a member of the original band formed in 1984 .