OK guys well heres the thing when I hit speeds 80 and above theres a vibration that comes and goes in duration of abut 1 second. I don't know what I can doto fix this issueor what. I wouldn't mind fixinf it, kinda annoying and scarey when I'm in a hurry. Could it be a bearing or seal on the rear differantial? Anything to help me would be appreciated guys thanks.

 

first thing is to check the wheels to see if there's evidence that weights have come off. keep in mind, when u have ur tires balanced, they're balanced at something like 55 mph. find a shop that'll balance them on the car. sometimes a slight vibration can be eliminated just by deflating a tire and turning it slightly on the rim and reinflating and balancing it. bad bearings cause roaring noises more than vibration. also, bent rims will also cause vibration.

 

bent rims would suck I like my rims

 

bump

 

I'd check the balance. Mine had the same problem. Does the vibration increase as you increase speed past 80mph? Mine would get so bad it was all I could do to keep it on the road. After I had balanced, the problem has been solved. Also when the tires were balanced the shop did them spot on where they turned the machine's settings off that just estimate or average the balancing so that it was a more accurate balance. Got to stand there and watch, that guy really knew his stuff. Helped that he has a 7 too

 

check you clutch fan bolts, possibility i forgot to tighten mine one time and got the same thing..