Turn Signal problems of the 2012 Cadillac CTS

2012 Cadillac Cts wagon: rear stop, turn signal, back-up, brake lights are coming away from body of vehicle. The tabs under the top have broken off and lights do not fit the body of vehicle as designed. The lights work as designed, photos attached of complaint. It appears that the plastic these lights were manufactured from is defective and lights could be changing shape and distorting under temperature changes, the holding tabs under the lights must weaken and eventually break off. Have been told by dealer this is normal? wow! upon search of www and Cadillac forums found that these rear lights were defective and I read where they have been replaced by dealers under original btb warranty (if the owners complained hard enough). I am now the third owner and warranty has expired. Here is the kick in the groin: gm/Cadillac in oct 2012 remanufactured these lights from a higher quality plastic to resolve the bad manufacturing-poor quality plastic used previously. I believe this to be a serious safety issue for both driver, passenger and the general public. A car wash will eventually destroy and or remove these lights for me. Or if hand washing vehicle I could cut an arm or finger. I also believe that there were insufficient of these vehicles manufactured/built and therefore the dealers and gm/Cadillac don't feel the need for further action or assistance to current owners out of warranty. What ever happened to safety issues here? I could epoxy/glue these lights to stay in place and make the removal of them impossible for future service, possibly doing additional damage to the vehicle, or I can purchase new oem replacements! as long as the replacement lights are manufactured after oct 2012. Thank you for reading my complaint.