2/3 Beltech drop ride help needed

[David Paul]

I installed the 2/3 kit on my 04 Tahoe with the street sport shocks, complete with shock extenders, free travel mod, and the proper rear end links. Running new to me 20" wheels, 31psi. Front end aligned, with new upper and lower control arms, rear air bags at 5psi. I like the look and ride on relativly smoth roads BUT, when I hit bride expansion/transition joints at 65/70 mph, the truck shakes violently. It is very unsettling to say the least.
Any thoughts on solving this issue?

 

[Gtir007]

Is the shaking from the front? If so Change the pitman arm and the idler arm

 

[nharkey85]

How long have you been lowered? Better yet how many miles since?

I originally ran a McGaughy's 2/3 setup but never put many miles on it to really break it in. I've got close to 10k on my 3/6 setup since December. It's slowly softening up.

 

[David Paul]

I've had the truck lowered about a month, 400 miles.
Ted, it is shaking from the front. I did not change the the pitman nor idler arms when I did the control arms. I'll check those as they are original, with 158,000 miles.

 

[David Paul]

So today I change out the idler and pitman arms. Idler arm no too bad, pitman arm had noticeable play in it. Holy crap, what an improvement. Steering is much tighter and much improved feel.
Haven't tried it on the highway with the bridge transitions, but I suspect it will be much improved.
Thanks Gtir007 for the tip.....

 

[TheAutumnWind]

How do the front jounce(bump) stops look?

 

[David Paul]

They are brand new. Funny thing, when I ordered them through the dealer, I called them jounce stops. Parts guy had no idea what I was talking about. I then said "the front bump stops" He then understood what I was looking for.....

 

[nharkey85]

They are brand new. Funny thing, when I ordered them through the dealer, I called them jounce stops. Parts guy had no idea what I was talking about. I then said "the front bump stops" He then understood what I was looking for.....

That's why you come here to learn the truth, and not rely on some parts jockey.

 

[nitty]

I would like to know did this fix your problem?

 

[David Paul]

Nitty, I haven't tried it yet on the highway but will post back once I do.