They are adjustable, and if you slide them all the way apart, that is how you remove the black cover that goes up against the back of the seat. On Cars that have A Bose system, you would find the bose amp back there, an ELC module i believe, and a couple other things that i dont know what they are.

EDIT:

lift up on the part that the arrow is pointing to and pull the two peices apart.

Had to go out and look in my trunk. I thought I remembered seeing those contraptions when I bought the '01. Each of mine are tucked up against the speaker magnets with the foam pads between the plastic "arms" and the speaker. They are held in place with a quick-tie. They protect the speakers SOMEWHAT. I remember when I bought the car it looked like that is what the factory should have completed and didn't, so I completed the job for them.

They are there to take up space and keep from jamming something into the speaker. I cut mine off. was able to get twice as much into the trunk after. They were always popping off anyway. Get rid of them.

Mine is always falling down, the clips just dont hold. Do you really need it?

I've got a couple thoughts on them.

Can anyone check the owners manual and see if there'* any reference?

First thought.. they hold some type of packaging that is used for dealer prep on the car. Like lug nut covers for the wheels, trunk accessory bag, etc etc. All the prep things that come with the car.

Second thought is that they were for some type of cover as others mention that was never put into the cars. Might be an early production number type of thing. Where the first few cars off the line got them.

I didn't find any reference in my manual, but then again, my car is an early 01 so it may have been removed from the manual by then. They won't take any real weight, which is surprising considering the attached foam.

Yes, I have one of the first cars manufactured July '99 - I'll check my manual at lunchtime and see if this brace is referenced anywhere.

My right side is broke too ...I duct taped it up during this last camping trip. It does appear to be some sort of protection for the speakers....and yes, they are connected to a wall at the rear of the car.

So...those who do not have it... do you have the plastic wall?

The panel has magnets on it that hold it to the rear seat brace. I looked at Pat'*.

Apparently this has been questioned before. Pretty much the same answers then, too!

http://www.bonnevilleclub.com/forum/...ight=trunk+lid

I don't have those, but I do have the plastic panel that helps keep the speakers safe. My panel is a POS though, it won't stay up lol