NHTSA Complaint #11440377 — 2010 CHEVROLET EQUINOX

I bought a Chevy Equinox in 6/2020 and have had high oil consumption problems. I took it in to where I bought it and they said it was a catalog converter problem along with seals and pistons that could damage your engine. After researching it, i found out there was a recall and class action suit fought in 2018 for the same problem. I was never told about this from the dealer and because it's outside the date to fix under the recall and warranty I have to pay for all the damage. The car broke down yesterday and had to be towed. What can I do? I'm still financing the vehicle