Even if you pay cash, a dealer may require a credit check, however you have no obligation to provide any financial details. I think they just want to make sure

Even if you pay cash, a dealer may require a credit check, however you have no obligation to provide any financial details. I think they just want to make sure your credit is good enough for some proxy that your check is good. I've also heard it's for identity purposes. Also, this all might vary by state laws, too...