Hi, I filled up my Vue a few days ago. Guage went to full. As I drove for the next 1/2 hr it plummeted to a 1/4 tank like I was leaking fuel. ( i wasn't). Now it just hangs around empty, if I fill up it might go to almost 1/2 tank reading. The car runs fine so it knows it has fuel. Any ideas on what failed, electrical, or whatever? Thanks, Jim