Cerberus, the current owners of Chrysler, will likely follow their usual pattern of trying to extract every available dollar from this failing enterprise before it goes under. As a result, it would not be surprising if they are dragging their heels on providing replacement parts under warranty.
When an investor group like Cerberus buys a business, it usually sounds the death knell for that company. I doubt that Chrysler will be around much longer, at least in its current form.