DGK194

I bought a new '22 GMC Sierra Elevation in 2 months ago for the sole purpose of towing my trailer which I use weekly. Same trailer brake error showed on the screen the first time I hooked up. Went to the dealer yesterday to have it fixed, they replaced the trailer brake control module, but it still has the case "c159c-49" and not working. Dealer said "GM is working on a fix". No known date of resolution, in the meantime, I'm stuck paying for a vehicle I can't use. Any one try getting a loaner or a refund?