I would advise you to check out the Previa site on Yahoo. It is an excellent site.
Check this site it out http://tarago.blogspot.com/ , it helped a lot.
The cover surrounding the stereo just clips on, give it a good pull toward you and it will pop off, the stereo will be right there...
Get a Haynes manual - there's a lot of stuff to take off
On the panel I think it says radio
Toyota Previa was created in 1990.
with difficulty
remove the radiator, then remove 4 screws that holds the fan ,,done..
yes, you have. And change new seal too.
how to replace a heater matrix in a toyota previa
yes
remove the radio.and once outside remove the tape deck wich is screw to te radio.
look in how to bleed air off cooling system
Toyota previa starter motor wont engage