to change the cabin filter you need to go through the glove box.to do so you need to pull out the glove box then there should be this box in front of you all you have to is push down alittle on the two tabs highlighted and remove it. as for the replacement im not sure and the size i cant remember thateither.and heres where i found the pic:http://forums.genvibe.com/zerothread?id=982
as far as rear wiper. I recently added some Silblades to my Vibe. I found exact length replacments for the front but not for the back. I ended up buying the shortest replacment they had (16" I think) and cut it down to the same size as the current blade and just put the Silblade in the same housing. It works great.
2005 Platinum AWDMoons and TunesXM RadioLLumar Window TintingWeathertech ventshauling my Taylor 410 w/Fishman pickup and Gibson SG guitars
You can get the cabin filters from the dealer or a local auto store will carry AC Delco or Bosch but unless you like spending lots on a filter, there are cheaper places. Here is the cheapest I have found... http://forums.genvibe.com/zerothread?id=11745Do not get me wrong, AC Delco makes great parts but I just will not pay that price of a dumb filter! And like mspalmer says, cut down a normal wiper, it will work just fine!
for a filter just use a 3m house air filter and cut to size, i think you get at least 4 out of one. cheap and prolly better than the stock one.As for the wear wiper blade, Binary was saying something about cuting a normal blade (for front or what not) and just making sure that the metal holding the rubber was intact and it would slide in the back one as long as it was the same size, ill be doing this later, my rear blade is toast.