I had mine performed last summer and they installed new thrust wahers and wheel hubs(wheel bearings)but after i suggested to the shop forman that by only changing the washers its only going to be a temporary fix and then he suggested to perform the washers and hubs as a courtesy,mine was audible primarily on the drivers side,which instead they did both sides,the TSB affects mostly 13 PP SHO'S from my understanding,maybe i can try to find the work order and post it for you.