So ... took my 2013 back to dealer and explained that the bulletin given to me (see above) did not apply to my car. After review (and talking to the head mech.) service rep. agreed and a NEW SC is now on order.
Seems to me ALOT of these issues are resolved (or not) based upon who you talk to. Shout out to Ken @ Lamb Chevrolet in Prescott, AZ for doing just what he was supposed to "his job".
Chevrolet has an obligation to fix this issue, if they are arguing this fact then take it to another dealer. MHO