Billie engel

I am also hearing this on my 2015 Cadillac SRX and we're going to charge me a 1 Some odd dollars for a $50 part Just to replace the relay in my blower motor A total of $367 I think so I really can't afford to go to the dealer too Set the programming on the BCM if I can get by with doing it on my own cause it's only a $100 part. Please help