In the US, you can not get another Federally Guaranteed student loan if you have one in default. You can get another student loan if you consolidate your defaulted loans. To get help consolidating...
It will depend on what type of loan it was that you co-signed for and is now in default. The federal government will probably not give a loan, but a private bank may if you can present a good case...
Auto finance companies are very leary to lend to people that owe the government, so the answer is most likely no.Yes of cours you can get car loan if a student loan is in default there are many...