i have a 2006 dodge ram 1500 laramie 2x4 :shy: , i have a vibration(shimmy) at first 30 to 35 it shacks a bit or hesitation if press gas goes away .and start at 47 to 56 after shifting to last gear(OD) the vibration tart again and some kind of rattle metal noise under i have check for touthing metal under none muffler leaks none if i push the gas goes away:4-dontknow: and comeback after cruising same for the (shimmy) vibration not big but its there u can feel it on the seat and floor the wheels is not shacking my hand it kinda feel it comming from the back new tire and did it before with old one had truck for 9 month used at 63000 milles i also have a lifter noise not the hemi tick thoes it can make mds not working i have poor gas milleage i know its a hemi :SHOCKED: i have it tuned up tranny fluid change with recommended atf+4 new filters and new plugs original champion , thats all i have done so far i dont kno what the previous owner have done on it please help i am afraid of what dodge dealer will tell me they want 89 dollars for diagnostic and i feel its a tranny problem someone any ideas:thk: please answer