I looked it up in my parts book#25001613 and order it from Gmpartsdirect and when it came it was the wrong one. With a $20 return fee plus shipping it not worth sending it back after i paid $53 for it. Does anyone know the right number for the correct sending unit for an 87 GN?? The one that I ordered is missing the pump I think. I need one that's complete with the pump. If anyone one wants a brand new one without the pump i have one for sale (cheap). Thanks