2006 Cadillac CTS, I came across these people online, after reviewing on YouTube I knew for sure what I needed to fix my car. I need a module flagship one was the cheapest, I ordered one from them it arrived in great shape. By the time they emailed me and told me my part have been delivered, already had it installed key learning system complete car running fantastic. If I ever never needed one again I highly recommend these people. God bless you and thank you for getting my car running again