How do you remove the rear speakers located on a 2001 Nissan Altima?

I can't speak for a 2001, but on my 1998 I removed them through the trunk. Pretty quick and easy that way, just a few screws in each.

*Edit*

The 2001 Altima GXE Special Edition The way that I had to go about accessing the rear speaker housing was through the back seats.

I actually am going to be replacing mine tomorrow, and taking a tutorial video on how to replace them. watch youtube.com/ohnoesitsroy for the video to be uploaded in the next few days.

Try to use the Nissan speaker adapters plugs so you don't need to cut wires and mess up the electric system, you can get those from eBay or amazon.