REAREND SHIM PRELOAD (DEGREES)

[cow10r]

I installed a set of 2" leveling shackels on a 2016 Sierra CC. Im going to take the blocks out tomorrow. I had a set of u bolts made. I don't have any vibration issues but wasn't sure if the blocks were gonna create any. Im sure your suppossed to have some preload (degrees) in the rearend for towing. I want to shim it while im under there. How many degrees of preload, degree, or whatever you wanna call it am I supposed to have ? Thanks

[victorsdaddy]

Why are you removing the blocks?

 

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[cow10r]

To level it more.

[Nasty]

You're fine. I'm at 6 in the rear with no vibrations

[cow10r]

Thanks guys

[last truck]

If you do decide to correct your pinion angle due to lowering do a search on youtube, it isn't a set shim you will need, you will have to measure the trans and rear end angles and do the math to get it right.