Replaced both passenger and driver side rear window regulators

Miles: 33142

For a while now I had a metal grinding/creek noise when ever either of my windows rolled up. No noise when the rolled down. I already had the dealer look at them once and I assume the lubed them and it went away for like a week but came back just the same. 

So being close to end of warranty for items like this I took it back in and they replaced both windows regulators in the rear.

Part Numbers: 5QM-839-461-C, 5QM-839-462-C

I assume I got a bad batch since both rears needed to be replaced. So far no more awful sounds when rolling up.