Where is the fuel filter located on a 1991 Buick LeSabre?
Under the left rear passenger door, hidden above a hose holder.
Okay, it took me about 10 minutes but I found it. I have a 1994 Buick Regal & my oil filter is on the back passenger side of the engine, about 3/4 of the way down, below the power steering box. I hope that helps! On my 1991 Buick Regal the oil filter is located under the power steering pump which you access through the passenger wheel well to remove/add the filter.