I wanted to provide an update on this situation. National GM called and said that they would only allow me to get a rental vehicle for $44 a day while I wait for my part to come in and my Tahoe to be fixed. This is such a dumb policy as it barely covers a sedan. My dealer is working to get an exception, but I am not happy with GM service. Has anyone else had this issue when having such a major thing go wrong with a new vehicle? All my fears about leaving Toyota and Honda to come to GM seem to be coming true.