if he's still stumped try the ignition switch..iv replaced countless number's of those..more often in the 94-97's thou but the newer ones going aren't unheard of..

 

While cleaning the terminals, take a look at the positive wire that goes from the battery to the PDC and check it for any lumps. My sisters 99 had that cable go bad, it was corroding inside the jacket and the cable was lumpy all the way from the battery to the PDC. After replacing it and the ignition switch, the truck fires up every time without a problem.

 

thanks guys. we are off work this weekend so we will check all that stuff out. i will let yall know what we find! and im trying to get him to join on here but hes not that into computers. i aint gave up though! we are probably gonna paint his truck before long. he wants to paint it yellow with black racing stripes.