for a couple months now my truck started a chatter or vib when im in on the gas in drive or reverse its only near the steering coulum well thats what it sounds like its coming from....anyone got any idea???

 

its only when im on the gas slightly....or coasting and then i hit the gas and it starts back up

 

Could be the "intermediate steering shaft” Just had that replaced in the 03 HD when it started to rattle.

 

how much is that???? i noticed that the plastic on the shaft was broken and i thought maybe it was rattling from it and i broke the rest of it off....

other thing i thought was a flywheel i read in another post but couldnt be...

 

Not sure on cost...mine was under warranty. What year is your truck?

 

my trailblazer is doing the exact same thing. i just noticed it last night when i drove to town. i'll have to check the steering shaft. mine only does it when i give it a little gas on take off or if i am coasting and i tap the gas slightly. same as you described.

 

ya thats what mine is doing also good to know someone else knows what im talkin about lol...its a 2002 chevy exc,sb,z71

 

my TB is a 02 also. wonder if the problem is year specific. i don't know if the trucks and tb's are assembled at the same plant or not though.

another thing to add, i had my wife barely rev it while i watched the engine and the engine seemed to vibrate. so i am wondering if something else is causing it. i just hope it's a quick and easy fix.

 

odd, im gunna drive my sisters tb and see if hers does it also shes got a 2002

 

mine just started doing it yesterday. then i seen your post. the only thing i can figure is, i went to change the plugs the other day from stockers to ngk and the plugs were way too short. so i installed the stock ones and put the coil back over the plugs. i only took two plugs out. i wonder if one of the plug wire boots didn't go back on right. i think that would cause a miss though, at higher rpm and wot it goes fine.