I found this information with a diagram of the serpentine belt. Hope it helps.
Serpentine belt and pulley diagrams at www.alldatapro.com
you have too take the front motor mount loose and lift the engine to install it
To replace the serpentine belt on a 1994 Oldsmobile Achieva, first, locate the belt routing diagram, usually found on a sticker under the hood. Use a wrench or socket to relieve tension on the belt by turning the tensioner pulley. Remove the old belt from the pulleys, then install the new belt following the routing diagram. Finally, ensure the belt is properly aligned on all pulleys and release the tensioner to secure the belt in place.
There is a tension pulley located on the left side and down about half way down with a arm attached to it, you have to pull the tension arm up to release the belt. actually on the 96 model it not that simple just to change the serpentine belt you have to disconnect MOTOR MOUNT before you can remove belt i know that sound crazy but i have a 96 acheiva sc v6 that i change belt on not pretty!
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How do you route a serpentine belt on a 1992 Cierra Oldsmobile
To change the belt tensioner on a 1997 Oldsmobile Achieva, first disconnect the negative battery cable to ensure safety. Then, locate the tensioner, which is typically near the front of the engine. Use a wrench or socket to rotate the tensioner pulley counterclockwise to relieve tension on the serpentine belt, and remove the belt. Finally, unbolt the old tensioner from its mounting bracket, install the new tensioner, and reattach the serpentine belt before reconnecting the battery.
how to replace a serpentine belt on 1992 grand am 2.3l
My 1992 Olds Delta 88 has the serpentine belt diagram on the top of the radiator
You don't, as it has no belt. It has a chain that should last the lifetime of the engine.