1993 Cadillac deville sedan 1986 cadillac deville RIP
I previosusly filled my take 3 days ago and and the level of the fuel in tank the display says I had for example 11 gallons and by the end of my trip it would say I used 2 gallons which takes usually one. So I refilled my take yesterday and reset the fuel data center module the mpg and was set to zero with a full tank the gas used says 3.0 and I would have a full tank for example it says I have 14 gallons and tthe fuel used 5.2 . So idk the next guess I'm going to do is when the fuel used goes to 7 I'm going to refill it I don't want to get stuck with out gas. Then based on what the display says on how many gallons I purchase I should be able to fiqure out what the issue is.