The only possible way to replace the tensioner belt or water pump on any Oldsmobile that I know of is to lift the motor with a hydralic jack, (make sure to place a piece of wood under the oil pan to...
I am not sure what year vehicle you are talking about, but the tensioner should be located towards the top of the engine. You will need a serpentine belt tool kit in order to replace it because I...
The belt tensioner is located below and in front of the power steering pump. It is accessed easiest by taking off the passenger front tire, taking the plastic panels out and looking just in front of...