Fuel guage shows low half hour after i filled up

[Edlee321]

I filled up my 22 yukon slt this morning, and after driving it about half hour and parking the guage shows low again, could it be due to 5° weather in my area, has anyone heard about this or had same issue in the cold weather?

Also coincidentally when I first started driving, message displayed battery low , please start the car, but message went away after.

 

[Sparksalot]

WOT will do that.

or could be the temp.

 

[66 Galaxie]

Low battery can cause all sorts of wacky errors to pop up in new cars these days.

 

[jforb]

Did you look at the fuel mileage display on the DIC? this usually works better if you reset one of the trip meters when you fill up