1993 Other Chevrolet Models alternator

On the tensioner there is a hole, well, not really a hole, but a square hole.

It will either be a 3/8" or 1/2" slot.

Some have a bolt head from 1/2" to 3/4".

And then, there are exceptions: as you look at the tensioner you will be able to tell what YOU have.

Put the appropriate tool on the bolt head, or inside the slot, and pull up on the tool.

If that isn't the proper way, push down. :-)

Either way, you have to get the tensioner to move off the belt so you can take the belt off one of the pulleys.