What size is the fan? Perhaps some photos are in order.
As a general rule, I recommend picking up a fan from a Chevy or Volvo or whatnot from a junkyard rather than some aftermarket thing in a box from AutoZone or Advance. Reason: The OEM items from reputable automakers may not look fancy but they work. The aftermarket things are only dependable for moving cash out of your wallet. Some of them move very little air. The aftermarket things also sometimes come with grilles that keep your fingers out, but unfortunately they also keep air out.
One other thing: The junkyards generally guarantee their fans work. They mark them when you buy them. If they don’t work, they let you pick out another. But you may have trouble with the warranty on a new electrical item such as an aftermarket fan.