low voltage to fuel pump on 1993 GMC Vandura 2500

i replaced fuel pump and relay ran good for about a month quit again checked voltage to[ pump 9.5v ]battery is reading 12.5 . fuse is ok help

by in Baytown, TX on April 20, 2011
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1 answer
ANSWER by , April 20, 2011
Voltage seems low; check for fuel pressure, though, and see how much you have.