Clunking noise when letting truck roll to slow down or applying breaks

[Tristinsulli]

I have a 2014 Silverado 1500 lifted (mcnaughtys 7.5-9.5 adjustable) this started a while back and either has progressively gotten louder or I just have been paying more attention to it. But if anyone here lives in South Carolina you know how rough the roads are… when driving the truck or accelerating I do not here the noise (unless I hit a big pot hole or bump I will hear it softly) but when I go to slow down if I lightly apply the breaks I hear this loud clunking noise that seems to be coming from passenger rear wheel area, if I apply the breaks hard I do not hear it all the time… already took it to the shop and they said my traction bars were loose…. Tightend those up and it did not help… Tia 

[JimCost2014]

2 hours ago, Tristinsulli said:

I have a 2014 Silverado 1500 lifted (mcnaughtys 7.5-9.5 adjustable) this started a while back and either has progressively gotten louder or I just have been paying more attention to it. But if anyone here lives in South Carolina you know how rough the roads are… when driving the truck or accelerating I do not here the noise (unless I hit a big pot hole or bump I will hear it softly) but when I go to slow down if I lightly apply the breaks I hear this loud clunking noise that seems to be coming from passenger rear wheel area, if I apply the breaks hard I do not hear it all the time… already took it to the shop and they said my traction bars were loose…. Tightend those up and it did not help… Tia 

Welcome to the site.

 

Are your drive line angles correct for the lift you had installed?

[dieselfan1]

I'm running the same lift.

Tighten every bolt you can. Shoot some silicone on all the bushings. Leaf springs, Traction Bars, etc.

What kind of Traction Bars?

Do you have the add a leaf?

If the bolts on the Traction Bars aren't 100% tight they will clunk just like you are describing.