so i now have a problem with the truck not cranking very fast. i just replaced the starter and alternator. the batteries are less than a year old. all have been tested by autozone and checked out good. the problem is that after my truck sits for more than half an hour it won't start. sounds like the batteries are dead when i start cranking on it. i did find one melted ground wire coming off the starter relay but have fixed it. any help is appreciated as i need this truck everyday for work.