I have a 2001 GMC truck !500 . The batterie has been changed twice. The one in the truck is only 90 days old. I ran a test on it it's good . The alternater is produceing 14-14.5 volts. But if the truck sits for 4-more days the truck will not start. The windows and door locks are NOT eletical , nor are the seats. The day time running lights have never workd, the head lights come one when the truck is started in the daytime. DEAD batter.
help ! ! ! ! ! !
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Thursday, January 1st, 2009 AT 6:52 AM