You need to contact your insurance company and have them assist you in handling the lawsuit. IF the other party was compensated for bodily injury by your insurance company they would have signed a Release, thus barring them from further recovery. If they didn't sign a Release, they do have a right to sue you for damages. They CANNOT sue your insurance company (or list them on the lawsuit) because your insurance company was not a party in the accident - HOWEVER your insurance provisions do provide a defense, so CONTACT YOUR INSURANCE COMPANY. Also, your insurance company will determine if the lawsuit was filed within the statute of limitations that your state has, if the suit was filed outside of the statute, then the lawsuit is not valid, and the other party will barred from recovery as well.
Good luck - AND CALL YOUR INSURANCE COMPANY immediately. Generally they have 30 days from the date of service to file an answer. If you were served recently, they need that documentation immediately. DO NOT file an answer yourself, allow your insurance company to earn their premium and handle the situation.
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Answer - they cannot file a warrant for your arrest - they have to prove in court of law that you meant to defraud them when you sent a bad check. They can however, make a negative mark on your credit score.