I agree it's rotten. That sucks. If it were me, I'm sure I would be way MORE pi$$ed than you are.
I wonder ....Is there any way to find out who the area manager is? Or, better yet, shoot higher up in the organization. Do some searching on Google and see if you can find a mid-level or high level executive at Chrysler. Just someone in a recent article. Guess at their email and shoot out a couple letters. Explain your situation to them ..that others have had their issues resolved by corporate, even out of warranty. All the calm things you have so far expressed.
I used to work at a fortune 75 company, doing field work. We did major construction jobs. Every once in a while we'd run into some disagreement with a customer we did work for, and sometimes it was even a customer being completely unreasonable (like we did EVERYTHING to please them but they just couldn't be pleased). Often the customer was just a jerk and wanted to get extra work that wasn't part of our contract.
Well guess what? Sometimes a customer would craftily search out and get ahold of an exectutive at corporate, a executive we'd never heard of before who had no relationship to our branch, knew nothing of the project or knowledge of the customer. But they took the customer's frustration to heart and believed everything they said. Then the crap would hit the fan and we'd be told to stop EVERYTHING and get that problem corrected RIGHT NOW ..... "Or Else!!". The hammer dropped on our heads from corporate. It worked for the customer every time.
I mean, whenever that happened, the customer, no matter how unreasonable, always got the royal treatment by corporate and usually a couple calls back by the executive to make sure the work was performed to their satisfaction (they NEVER gave a crap about any other customers). Believe me, if you can get ahold of the right guy at corporate, and get a well-crafted email out, it works. For one reason, executives don't get a lot of customer contact. So when it's really bad (but presented professionally), it chews on them and they know who's desk to walk over to and get some action.
Just thought I'd throw that out. .