My fuel guage constantly reads low fuel even when the tank is full, i put a new fuel on 2004 GMC Sierra 1500

I thought it might be the fuel sending unit itself but it wasn't can you help??

by in Chatham, LA on August 21, 2012
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2 answers
ANSWER by , August 21, 2012
Faulty wire(s) from tank sender /ground or instrument panel. Scanner can sweep guages to check if all are working.
ANSWER by , August 22, 2012
yes have a sweep test on all gauges