Leaf Spring Block Squeak

[TheTrueMoron]

I recently put some 3" Zone Offroad blocks on my rear axles. Since having them on, they rub against the leaf spring and make a creak/squeaking sound every time I accelerate or brake hard. I've sprayed silicone lube between the blocks and leaf springs a couple of times and that helps for a day or two but then the noise comes back. I'm embarrassed by the noise and I'm contemplating putting the stock blocks back on. What are you guys using/doing to stop the noise? Also, is this harmful or potentially damaging to my truck?

[gmtech4]

what torque setting did you use ?

[TheTrueMoron]

All the way until they wouldn't tighten any more using a cheater bar. I've since retightened them every week with the exception of the last 2 weeks since they won't tighten any more.

[TheTrueMoron]

Got a video of it but you can't really see the movement. You can definitely hear the creak, though.

 

The noise happens at around 8 seconds in.

[Silverado4x4]

You need to put those anti-squeak shims in there, there made out of nylon and I think you can get them at the dealer for like 2 bucks.

[gmtech4]

and replace the u-bolts and nuts and torque to the recommended torque

 

,you have over torqued yours and are risking the public that share roads with you

 

when the ubolts break ,you will be sued beyond anything you can imagine

 

i wouldnt drive it ,,,im asking you not to

[TheTrueMoron]

I got my hands dirty today and figured out what it was. The surface on the axle where the block sits is not perfectly flat; it's actually slightly round. The replacement blocks are flat, and they rock around on the axle as the center of pressure shifts on the leaf springs. The factory blocks (see attached) have a notch in them to get around this situation.