SC tensioner

I am planning to change my SC belt tensioner.Can some one help me on the part number.I have been looking and every online parts store list just "tensioner".How do i find out if it is the one for the SC?

Try gmpartsdirect.com

If anything, you can get the GM part number from their site.

Despite their exorbitant shipping cost, most items do come in lower than most other places I've looked at.

rockauto.com is another good place to look.

IF you can't find it there, I will check when i get back to work tomorrow and I'll get the part number for you. I don't have my GM parts lookup computer here at home (Wish I did). Just a note, most of the aftermarket tensioners are for the accessories belt, I believe your S/C tensioner is dealer only.

your s/c belt tensioner number is 12564506, and dealer retail is $80.52, I can get you one for $60+s/h (I work at a Delco distributor in Flint, MI)