That's why I bypassed the headache and went with the new car loan through my credit union. I also only went with a 60 month term which saved me another 0.5% on the interest rate.
Don't know how much I would have saved (if any) going the Chrysler Capital / cash back / credit union re-finance (used car rate) but that was more than I was interested in biting off.
I haven't had to do any paperwork, except make a monthly payment, since the day I bought my truck and IMO that's worth whatever I may have saved trying to get the Chrysler Capital cash back. I also knew what my term was, interest rate, and monthly payment before I signed anything.
Just my .02