[vipergg]

If you haven't already pull both battery cables and thoroughly clean the inside of the cables with a solution of warm water and baking soda , best thing to use is a old toothbrush ,then clean and dry, do this even if it doesn't look like it needs it . Sometimes you can get an almost invisible high resistance coating on the cables. Get a battery terminal cleaner and rough up the battery posts and then tighten cables . Also you might want to get the battery load tested at the nearest part store while disconnected.