Whewe is the oil pressure sending unit located on a 2001 grand prix gtp?

The oil pressure sending unit on a 2001 Pontiac Grand Prix GTP is located on the driver's side (left side) of the engine block, near the oil filter. It's a relatively small unit with one or two wires connected to it. You'll likely need to get under the car to see it clearly. Be careful when working near the engine as it may still be warm.