In late October I backed into a concrete pillar holding a lamp post. Was only going maybe 5mph if that. I went through USAA for the repair and went with their approved repair shop. Ended up being the local GMC/Cadillac repair shop. The perk of choosing the USAA approved place is a lifetime warranty on all repairs/paint. The day after I got the car back (Also the day that the temp dropped from Fall to Winter weather) I noticed a groan coming from the rear end, more specifically the side with the previous damage. It does it when the car is cold when I reverse it'll make the noise for a few seconds, then when I turn it makes it again while I turn, lastly it does it when I'm starting to move from a dead stop but only for 2 or 3 seconds. Once the car is nice and warm it doesn't make the noise anymore. I noticed that some of the heatshield seems out of place so I'm not sure if maybe there is just something rubbing from shabby re-assembly or if possibly my wheel bearing is starting to fail. The only time I car hear the noise in the video is at around 1:50, sorry for the distortion in the video, not sure where that is coming from.