Well you can pull the shifter cover off and look for something broke.The button moves a rod in the shifter(tube)
,which is connected to a cable that runs down to ????????? <img src="/forums/images/graemlins/smile.gif" alt="" />
not sure the book doesn't have a pic of that......reckon it goes to the tranny.It looks very simple.
There is only a couple screws to take loose and all of the console pcs come out.There is one behind the ashtray,and 1 in the bottom of the console..........and then a bunch of connectors to take loose.It's not bad.The face plate on the radio just pops out,you'll need the tranny in 1 to get it out.
Goodluck

Bansil