Had my oil changed 3 weeks ago. Found my 2011 Equi...

Had my oil changed 3 weeks ago. Found my 2011 Equinox is having a problem with it burning oil. CHEVY KNOWS THIS IS A KNOWN ISSUE.
MY car is under 80 thousand miles.
The Dealer basically told me I was screwed!!
This is a known issue.
I am writing to GM. If no satisfaction I will join the others in a class action lawsuit about this problem!