So I have a 1995 Buick Riviera GS w/ the Series one L67 Supercharged engine....

I just bought it a week ago for $750 from my mom. They never have had much problem with it. Well I havnt either.... atleast not noticeable. Today the belt started squeeking so I decided to take a look and see what the problem was.

I opened the hood and looked at the belt, it was severely worn out and there were rubber belt shavings. I looked in or further inspection and looked down at the idler pulley. I looked around for a belt diagram, but couldnt find one so I consulted the Owners manual and found a diagram. I found the idler pulley, and read the description. It says that there is a seperate idler and tensioner for the supercharger/AC belt and water pump/power steering belt.

They both seem to meet in the middle on a idler pulley, but then I consulted the internet and found another diagram where it makes it look like two pulleys on one bolt.


I am asking if there are two seperate idler pulleys or not? and if so is there a seperator in the middle. I went to autozone and checkers today, and will end up at the GM dealer tomorrow. The only pulleys I could find is a smooth pulley which is the same as mine and then a grooved pulley and no description on it, they are 3" and 3 1/4" diameters.

If anyone with a series one engine could look down at there idler and get a picture, or if anyone has pictues or diagrams or a idea or part number or anything, I would be very happy! :P

^ exactly, there is a second pulley, and it has to be grooved... kuz the way it would touch that pulley.... I did find one grooved pulley at checkers today but if I bolted them next to eachother then they would be touching, they shouldnt be touching...



^see that pic