We have a low mileage (54k) 2014 Gen 1 Volt. Our dealer was doing a recommended brake fluid change and somehow managed to contaminate the brake system during the process. They tried flushing the system several times but were never able to clear the error messages, so eventually GM engineering told them to replace the brake master cylinder, the "hydraulic control system" (which I assume is ABS control module), and some other parts. Good news is that the dealer was upfront about the issue and is covering the repairs. They're also letting us use a loaner Chevy Trax for the time being (but we aren't allowed to have our dogs in it, so we can only use it for errands but no road trips or weekend activities with the dogs). The bad news is that the needed parts are backordered with no ETA. They said that GM is doing a search of dealerships and independent parts sellers to see if they can track any down but they let me know that it might be a very long time. Has anyone else had a similar situation? Is there a certain point that I'd make sense for me to start pushing for them to just buy back the car if they can't fix it in a reasonable time? Thanks!