trunk button

My Buick Regal (2012) is having issues locking. When I push the button on my remote only the driver side unlocks and locks, leaving me to manually unlock the other doors. What is the way to fix this? I cannot find a fuse for it. Also the trunk doesn't work, from any side. Aside from crawling...

I just got this Regal (super clean) from my Uncle and I'm going to give it to my daughter and I can't believe theres not a button to relase trunk lid in glove box (how cheap) and I was wondering if I could wire in a button to release the deck lid? The trunk can only be opened from fob or by key.