Yes if they are licensed to collect in that state.
Added Comment:
Technically true, however, ONLY if they solely own the debt. If they are acting on behalf of your credit card company, then "no" they can not ... NOT on their own accord. They must actually get permission.
A lot depends on the actual action. Most agencies purchase these bad debt accounts for very small amounts .... and it's the agency that tries to get whatever they can out of it. It depends on their initial investment.
If you pay "something", they can not take you to court... You are showing attempt to pay... doesn't matter if it's a dollar OR $10....
Always better though, to try and settle or something like that.
No you can not
Yes.
Yes.
YES
Yes.
Unless you have a specific repayment plan that the collection agency agreed to, there is no legal reason that cannot sue the cosigner.
Any collection agency can, in theory, sue you anywhere they can find you. Whether or not they have jurisdiction or a valid claim and whether you have defenses would depend upon the circumstances.
yes
If you are not refusing to pay and you pay the debt, they would have no reason to sue you. If you refuse to pay a valid debt, they may advise their client to sue you depending on what state you are in and what the laws are there. Some states only allow original creditors to sue and not the collection agency.
yes
Yes - they can, or they can put a lien on the vehicle.
If they've sold your case to a collection agency, they have been "paid" for your debt with the money the collection agency gave them for your case, so, no, they can't legally sue you - as far as I know.