AM brake drums….every Manufacturer

YO
So my neighbor wanted to RR/Rebuild front/rear suspension stock 09 Silverado

months ago bought (pretty much) the highest level of parts from RA

he has mech friend, and after month or so went to his place(I went as well)

installed UCA’s/LCA’s/loaded strut/inr/otr ties/bolt on front bearings/pads.(F & R) as well as rotors and drums

took 1/2 day
Good day

upon driving back home
Horrible vehicle shudder coming from rear

I expressed my opinion about a thread I read about ‘new AM drums’ being warped from storage at a warehouse.
Both neighbor/mechanic said no way…….thought was P brake adjustment……next week adjusted the same
Still this bad shuddering persisted.

I again(GM Owners) explained that thread. Told them that TW member actually put his old drums back on…..then perfect/no shuddering.

they listened. We put on old drums….perfect.

UGH
Just want to state……

If you buy AM drums…..just be prepared for 1)a return to vendor 2)$30 a drum (Oriellys) to resurface