Keyfob issues

Hello, the fobs are the end device that communicates with the vehicle. If you've replaced batteries -- and the fobs themselves - I'd recommend consulting a repair shop that has the proper diagnostic equipment and programming equipment to make sure all is set properly and is communicating as designed. Note that you want to make sure you are using genuine General Motors parts, or you can't bet sure they'd even work. Use this link to find some shops near you that can help with your concern: www.repairpal.com/repair-shops