I have a 2013 Buick LaCrosse, and after shopping for several days and buying a remote that did not work, I realized there are several variations of the LaCrosse requiring different remotes. There are seemingly dozens of companies selling what they claim are compatible remotes, but they're not. Many list remotes as compatible when they're not.I discovered that you're supposed to match the FCC ID and the GM Part Number when you buy a remote, but GM changes part numbers frequently and there is no cross-reference that I could find. Fortunately, for me, I found your website an was able to chat with your agent, Mike B. Mike was able to consult with your tech folks and find the remote that would work with my car, Interestingly, neither the FCC ID nor the GM part number matched my broken remote, but Mike assured me it would work and, moreover, I could return it if it did not. When I received the remote, I programmed it successfully and it works perfectly. Thank you for the great experience.