U-bolts loose - might want to check yours!

[BlancoSilverado]

1 hour ago, hotrodz37 said:

That’s about what the first post said - curious what the exact final torque value is. Somewhere in the 80-90 ft lb range it looks like.


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Yes, i just like documentation, i could not find anything online. i even tried looking for the installation instruction of the trailboss lift kit. 

[hotrodz37]

Yes, i just like documentation, i could not find anything online. i even tried looking for the installation instruction of the trailboss lift kit. 

Couldn’t agree more - nice to see it on paper and the torque sequence as well.


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[Giantpeaches]

fabtech says 130ft/lbs with their lift kit with rear block but that's with their U-bolt and such

 

https://fabtechmotorsports.com/instructions/FT21268i.pdf

[Bob Ross]

15 minutes ago, Giantpeaches said:

fabtech says 130ft/lbs with their lift kit with rear block but that's with their U-bolt and such

 

https://fabtechmotorsports.com/instructions/FT21268i.pdf

I wonder if they are a different grade (5 vs 8 )? Since I'm still in warranty I ordered new parts and will install per Chevy instructions posed above just in case something happens. Ahh maybe I should just get a lift. 

[Pinnacle]

Wow! so everyone that checks is way under

[Silverado4x4]

I checked mine today for the hell of it and it was right on at 60 ftlbs 2 of the bolts turned about 1/8" till it clicked so really mine was fine.

[kpanza]

60 is NOT fine...they should be around 85 or so after the final 120 degrees past the 60ft lbs.  But at least yours were tighter than most of ours...

[Donnie Summers]

Glad I checked mine, Under 50...…..

[Donnie Summers]

Torqued my to 85 foot pounds.... Lemme tell ya, They were loose...

 

[SmokeyJoe101]

I bolts are one of those things that get re-torqued after a few hundred miles.  They stretch 

 

that being said I have never checked them on a new truck only after doing my own suspension work.

 

gonna have to check them tomorrow. 

[2019_Silverado_HC]

I torqued mine to 85 and about 95% of the clunking is gone.  

What I have discovered is that the clamp that surrounds the leaf spring is what is making the noise on mine but only on the passenger rear side.  I got under the truck and rocked the truck side to side and that is where the noise is coming from.  I’m not sure there is a fix for this as the clamp is not capable of being removed or how you would put a thing sheet of rubber around the spring to isolate it from the clamp.