Tensioner Pully

My pulley for my tensioner is making noise. I went to the auto parts store to get a new one. They list the 2 idler pulleys for the supercharger belt, but they don't specify one for the tensioner. I'm thinking that is because the tensioner pulley is the same for the supercharger and the accessory drive. Can someone confirm they are the same...

I have to assume you have a GS, but what year & engine size! If you have the L67 engine, here is pic with the Dayco pulley part numbers.

http://img372.imageshack.us/img372/8757/pulleyspd1.jpg

That's the one. Thanks, they are both the same pulley.

I have to assume you have a GS, but what year & engine size! If you have the L67 engine, here is pic with the Dayco pulley part numbers.

http://img372.imageshack.us/img372/8757/pulleyspd1.jpg