I am thinking about going to driving school. My problem is that I have bad credit and no co-signer. How hard is it to get a loan? btw I am not able to get Federal grants

After reading the comments on here, it seems that you might want to think about going to one of the trucking companies that offer CDL training and stay with them for the time period to repay the loan, this is just a suggestion. Good Luck

By federal grant, what do you mean? WIA, PELL?

Some community colleges have access to some state funded financial aid.
Have you checked around for that?

Only other way is possibly by finding company sponsored training.

WIA and pell