Quote:
Originally Posted by droppedgmc
the way you describe it sounds like a level sensor
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when it has a full tank the needle wants to stay on empty, when its 3/4 - 1/4 the guage works correctly and when under a 1/4 it wants to say empty. my friend has a 99 sierra and his stays on full all the time, no matter what. must be a common problem with gmc's.