Looking To Buy A 2002 - 2006 Dodge Ram Gas Truck What Should I Look For?

Ok ive bought two crap vehicles i know a decent amount of knowlage about cars and trucks but obviousley not enough so im asking for help? So im looking at getting a Dodge Ram Quad Cab, due to crap cars I do not have much to spend so i need to know obvious sounds objects to look for (leaks, ticks, reaction, timed reactions) or anything eles? Im so tired of not having a reliable automobile I know buying a used car there are things going to go wrong, but both had timing chain problems the first i should have known 200,000 miles DUGH!! But the secound only has 89,000 miles!! GRRRR!! you can see why im so frustrated!!! So please help if you know anything about these trucks hidden tricks to check problems are welcome!! NOT LOOKING FOR ANY OFFERS ON TRUCKS FOR SALE ! ! JUST ANWSERS ON WHAT TO LOOK FOR ! !