Got some! Thanks!

[AJMBLAZER]

Got the blocks.  Thanks!

Edited August 17, 2021 by AJMBLAZER

[TheElementalCashew]

I think I have all the parts from the stock lift minus the front axles, I'll take a look later today. 

[Shane T.]

Will they work on the 2014-2018 Models as well?

[AJMBLAZER]

I think they might be the same part  GM used back then. 

[newdude]

On 8/8/2021 at 6:38 AM, AJMBLAZER said:

Wanted:

GM rear 2” lift blocks. Part number 84379975.

Used to lift the rear of 19+ Trail Bosses and AT4’s. Also I believe used under earlier models too. 
 

Anyone have a set sitting around?

 

Don't forget you need the Trail Boss U bolts as well.  Longer and all GM U-Bolts are 1 time use.  

 

1 hour ago, Shane T. said:

Will they work on the 2014-2018 Models as well?

 

See below.

 

1 hour ago, AJMBLAZER said:

I think they might be the same part  GM used back then. 

 

 

No.  These blocks were never used prior.  2019+up new trucks only.  

[TheElementalCashew]

So I believe these are the blocks and U-bolts. Also have the stock knuckles, tie rod ends, and rear lift Rancho shocks.