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Fuel Gauge on 2002 Buick LeSabre

Rookie cbe0621eac06868b3efe0d8d1d3611e23c60d3114864ea2ec19a68cfbd3eebab
fuel gauge doesn't work. Replaced float twice.
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You could have a wiring issue between the sending unit and the gauge. Is it showing totally full or totally empty? Is it pegged either way, or not quite?
It shows full for the first 200+ miles and then the gauge drops a couple of marks.....bell does go off when it is getting empty
Sounds like a sending unit issue. Not providing an accurate resistance reading. This is separate from the "float".