How do I switch from radio to the DVD player in my 2002 Pontiac Montana van?

[Danielle]

When I put the DVD in the DVD player, nothing happens. I don't know which button to push to switch over from the radio to the DVD player.

Any suggestions?

-Thanks.

 

[melsg5]

Do you mean CD player? If so, you just insert the CD and it automatically switches from the radio