Join Date: Jan 2008
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I had the same problem
try disconecting the alternator when you park the truck. my batteries would die if truck was not run for 2 days. and alt was charging 14.5V. replaced batteries, same deal. so I disconected the alt and it would sit for weeks and batts were fine. so I replaced the alt.
2003 f250 lariat 6.0 auto cc sb 4x4
leveled, 20x12 chrome hostages, 305/55r20s, 5" stacks, SCT livewire, billet grilles, custom vgt / s475 compound, custom built headers, ported heads, 6.4 valves, Hamilton springs, reworked pistons, delta cam, Florida converter, custom built 5r110, painted frame, chrome metalflaked valve covers oil pan and drive shafts.