MechanicAdvice

2014 Buick Verano fuel gauge all over the place

Car is consistently parked on level ground.

When I start it up and/or drive it, both the gauge and the digital fuel range are all over the place. Sometimes it shows a quarter tank when I know it's above half. Sometimes it shows 3/4 tank when I know it's less than half.

What's going on? Fuel level sensor problem? Something I can diy replace/repair?

Edit: this just started recently, but for at least a year when I'd fill the tank, the pump would register full but the gauge would always show about 7/8 full

https://www.reddit.com/r/MechanicAdvice/comments/1lvs8fh/2014_buick_verano_fuel_gauge_all_over_the_place/
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17 hours ago