The Nissan Path

I own an 07 Pathfinder. I experienced this problem in Dec. of 2012. I had 136k. I put out $6,000+. My mechanic had 3 other cars in the same condition sitting in front of his shop. I kept all my receipts he told me something was gonna happen. We sent all our paperwork to Nissan with their approiate forms. This was in Feb. of 2013. I received a rejection letter from them Thanxgiving week of 2013. My mechanic told me to be persistant and keep calling til someone helps me. Today, after 7 calls and waited for return calls, finally got my call and they told me I was SOL!!! Looking for a class action suit.