Alternator replacement
 

My alternator died. I got the dashboard message, the 4 chimes, and had someone at AutoZone plug the analyzer in.

Anyone know where the belt tensioners are on a 2004 3.8L supercharged engine? My Monte Carlo is a 2004 Earnhardt SS, and I do have a 95 thru 2005 Haynes manual... but, the manual doesn't even have the word supercharged in the glossary. The few 3.8L examples they show do not look quite like my engine.

I want to change the belts of course while I'm in there... and surely, there has to be a separate belt for the supercharger... one serpentine belt is not going to run the regular pulleys as well as the adjacent supercharger pulleys. But the local auto parts stores all insist they stock only one belt for this car.

Any help appreciated.