Question about 2002 Cadillac Deville
The problem is either a faulty fuel sending unit located inside of the fuel tank, the wiring between the fuel sending unit and the fuel gauge, or the fuel gauge itself is malfunctioning.
A good repair shop can find out for you which one is at fault by dis-connecting the wiring connector to the fuel sending unit and then use an adjustable ohms box to simulate the fuel sending unit, and the fuel gauge should read at a certain level of fuel according to the amount of ohms being put through the wire.
Posted on Jun 11, 2010
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Posted on Jan 02, 2017
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