New here and having some issues

Hello everyone,

I have an 05 grand prix (base model) with an after market car starter in it. I just installed a new after market cd player and everything works except now when I try using my trunk open button and the car start button on my key chain do not work now. Does anyone have any ideas? Thank you.

Are we talking after market key fob? If you are talking about the factory remote start and trunk release, that stuff was controlled by the radio. Removing that kcufed your fob. Put the factory unit back in and you will be good to go.