Going back about four years there was someone on this forum that was successful making a claim on his Class B under the Lemon Law in his state. You might try looking back in the archives to 2009/2010/2011. Every state has different rules under their Lemon Law and certain attempts have to be made to rectify the problems that have been unsuccessful to be able to go to the state and file under the Lemon Law. Start with the Consumer Affairs office in your state. It is often connected with the State Attorney General's office. They should be able to guide you - and you may want to involve an attorney with experience with the Lemon Law in your state.