Update: Just went to my KIA owners account. It was set up when vehicle was purchased. No recalls or other issues showing for the vehicle. Perhaps the fact that it is AWD or was built within a non-affected time period may be the reason why there is no recall on this particular sorento.
I was unsuccessful in getting any meaningful explanation from the dealer on exactly what they would inspect/do if I took my 2014 Sorento in for Recall # 20V519 (Hydraulic Electonic Control Unit leak) which I did receive a letter from (and my VIN is in the NTSHA recall lookup database)
Someone cold-called me from the dealer wanting me to bring the car in. She couldn't tell me what exactly the recall inspection involved. Passed me off to a service consultant. At first he said it was just a visual inspection for leaks. Upon further questioning, he started saying it also involved "testing its performance". I asked many times in different ways HOW they tested it's performance. I would have believed him if he even said "we hook up our computer to your car and run a performance test on the HECU or something". But the service advisor could not even provide that level of detail, just that there was some kind of "performance check". He said the only person who would know would be a tech. I asked him to connect me with on to ask but he refused, said the only way was to bring the car in, etc. Frustrating.