83 cadi deville 4.1> Was wondering if there is anyway to check the fuel gauge sending unit and does anyone have a wiring diagram of this specific model? Any suggestions would be helpful.

 

Hey Mikey: From what I can assertain from my diagrams the fuel guage sender is right near the fuel guage. It will be attached with a pink wire. You could do a continuity test to see if current is passing through it. You might want to check for any loose grounding points, such as a ground wire or the way it is mounted to the dash, etc.