Oh man I would be pissed - they definitely should have checked a head for cracks before selling it as remanned...
The used car market is still screwy, but we're seeing signs of change in the pipeline. Repos are up and wholesale prices are coming down, but most car dealers aren't willing to take losses on their current inventory. Lenders are also complicit with "extend and pretend" schemes so they too don't have to write down losses.