Hey Guys. So dealership is doing the warranty work to replace rear drivers side caliper. This is the same side with the higher temp and the grooves. I also do not feel this is the ultimate fix. I sense if that rear side was the only one dragging I would maybe experience a bias on the steering towards one direction or another, however the steering is straight when I let it go. The brakes are gm performamce brembo front and rears. The same type they place on the ppv vehicles with the exception of it being red vs black. In the rear calipers, there is this black box-module for a lack of words attached right to it. Easy access. It has a cord plugged right into it that one can easily unplug. Seems to me that it would be related to the electronic braking system. I am extremely tempted to disconnect them and try driving it on some wide open field with no traffic or potential for accidents to see if there is any difference. Researching more on this gives me the impression if the brakes were dragging, the heat would be much higher and more noticeable either by smell or touch. I will attempt disconnecting those rear plugs and report back. Sorry for the long gaps in update. Those calipers are on back order and may take awhile before I actually receive a new one. I'll report back after unplugging what "seems" to be an electronic connection to the rears. I feel this smaller Chevrolet dealership must have had some journeyman that Saturday that it was installed doing the work. I am tempted to travel to the larger dealership I purchased the vehicle from (2 hours away) to look over the whole braking system or find a culprit. Suck part is the distance, travel, cost and potentially getting the run around like previous dealership if they can't figure it out the first time. Will surely report back soon.