Vibration on acceleration??

[LOHRTBT]

So when I am either sittin in the driveway, if I rev the engine slowly there is a slight vibration you feel in the truck. Same thing when I am accelerating.. Its really there all the time but only notice it when I am accelerating from a stop or going uphill.

Any ideas on what it might be causing it? Dont remember it doing it on the test drive but I was pretty excited about its condition so I might have overlooked it lol.

All I have done it wash the engine bay off like usual...but its running fine otherwise. Just changed the plugs and wires so that is out of the question. Think maybe its the harmonic balancer??


Also..when going in reverse...the tranny goes squeak...squeak....squeak...squeak...until I put it in neutral...sometimes does it at low speed in drive also. what is this?? lol I am about to get the leak fixed and have the trans flushed and cleaned So It would be good to know while we are working on it in order to fix this.