That's just GMAC. Maybe Cerberus is trying to get more leverage over GM to force them to buy Chrysler.
Besides, 700 isn't perfect credit. More than half of the people with enough credit to have a FICO have a higher score than that. Median being somewhere in the 720s.
Your CU probably hasn't changed underwriting standards significantly, anyway, so if you could get a loan there before, you probably still can.