fuel gauge on 2000 Buick Park Avenue

My 2000 buick park avenue's fuel gauge suddenly went to pass empty and there was 3/4 of fuel before it went to pass empty, what could be the problem? Could it be the float in the gas tank.

by in Fraser, MI on November 29, 2010
2 answers
ANSWER by , November 29, 2010
Sounds like the sensor has died....or has come unattached. Have the sensor ohmed out and wiring checked for continuity
ANSWER by , November 29, 2010
unplug wires going to fuel pump the turn ing on ground purple wire gage shood move e to full it probley semely unit