slumlord - what kind of leveling kit did you put on? and how high did you go?

 

I'm not at home right now and the box it all came in is. I'll look at it when I get back to the house tonight. Not real sure exactly how much it was raised. Its adjustable. First time after installig it, it was a little too high and had to back it back down. The Store i bought my tires and the leveling kit from installed it. Got em to lower it back down till it set level on a level floor nad then they put it back on the rack and aligned it. The Camber was way off. Don't really know it we are actually doing some damage or if its just going to be a irritating type thing. I was wondering if changing the angle of the drive shafts or CV's could be causing it. Maybe it will line out or settle down after putting a few hundred miles on it???

 

The leveling Kit I bought was (ReadyLift). It came with two new keys and shock extenders to put the suspension or ride back like it was. You still have to re-align after installation.

 

yes, same here - Readylift...
your situation sounds about exactly like mine.

Does anyone else have any ideas???

 

i called readylift, they said there should be no problems.
they said check ballance, rotate, check allignment, and if all fails lower it a little, or take the level kit out and start over.
???
ill do all of the above this week...
we shall see...

 

I might try all u listed above till having to remove the kit. Then pay for a re-alignment? Maybe just lowering it a tad will help if all else fails. I still don't believe it has anything to do with balance, rotate or anything else with the tires. Mine is doing it with brand new Cooper SST's, Balanced, aligned N2 filled etc... When they put the readylift on they actually went as high as it would go and I didn't like it. I got them to back off a little and got it where I thought it was level. After riding around a few weeks and putting a hitch on the back and throwing some other stuff in the back I really wish I had backed the front end down a little more. It's very hard to pinpoint because of never knowing you are on exactly level ground. But i fill my frt end is still just a little high. Maybe 1/2 inch or so from being perfectly level. I want to put a front brush gaurd and winch on it eventually and that will prob level it up for me. So I already feel I have done everything that they suggested to you. short of removing it!! And I think I would rather put up with the slight vibration than go back to that nose down GM look. Please let me know if you hit the jackpot and figure this out. Maybe try these things one at a time so you know what it was. If you rotate, balance, lower and all at once you won't know what it was that was doing it. Good luck....

 

when the shop put mine on they cranked it all the way up first also. then we backed it off untill the truck was "level". Readylift said they dont care about "level" they only care about before and after measurements. they only suggest a total of 2 1/4 " lift to keep factory ride. i didnt take before measurements. i wonder if a difference of 2 1/4" to 2 1/2" would cause that vibration? can 1/4" do that? i will try the things i listed above one at a time and report back... maybe just lowering a 1/4" will work. the shop is going to look at it thursday....... ill keep my fingers crossed. the shop said it sounds like a balance or rotate issue, lets hope its not the drive shaft, or cv joint, or whatever...
thanks

 

hey "slumlord", i forgot to ask you, is yours doing it only at certain speeds or all the time?

 

Pretty much all speeds. Really notice it on the highway with cruise on. Its not always consistent though, may be the road surface causeing the coming and going or something else. I will notice it for a bit and then realize I'm not hearing it or feeling it as bad or at all for a bit but it always comes right back.

 

Took it to the shop today to have it ballenced and rotated. They said it wasn’t a tire issue. Thinking it was serious or a warentied item they called the dealership and wanted me to take it over there. Hummer said it was the new t. keys. They said try lowering it some or take them out. Ill try lowering it ½ inch at a time and test drive and see what happens.