Audio Systems: connecting mp3 player to 1998 silverado, auxiliary input adapter, rca jacks

Question
i have a 1998 silverado with factory tape deck and am wanting to play my ipod through it.  there is an aux button on the front.  does this have rca jacks on the back, or something else?

Answer
no there is no rca jacks in the back  but there is a 9 pin plug in the back you can use this to input audio

http://www.oemautosound.com/pc-295-147-pie-gm9-aux-chevrolet-auxiliary-input-ada...

or this to plug the ipod to the radio

http://www.oemautosound.com/pc-258-147-chevroletchevy-to-ipod-interface-pa11-gm4...