2004 Chevy Venture removal of CD changer

Open the ashtray or the cupholder.

Remove the following sets of screws:
Two screws from the front of the trim panel. For access to the front screws, remove the ashtray or the cupholder.
Two screws from the bottom of the trim panel. For access to the bottom screws, remove the console storage box.
Use a small, flat-bladed tool in order to remove the upper tabs on the IP accessory trim plate from the instrument panel.
Disconnect the electrical connectors, if equipped.
Remove the IP accessory trim plate from the instrument panel.
Installation Procedure

Install the IP accessory trim plate to the instrument panel.
Connect the electrical connectors, if equipped.
Align the upper tabs of the IP accessory trim plate to the instrument panel.
Install the following sets of screws:
Two screws to the front of the trim panel
Two screws to the bottom of the trim panel
Notice: Refer to Fastener Notice in Cautions and Notices.

Tighten all of the screws. Tighten the screws to 2 N.m (18 lb in).
Install the console storage box, if required.
Install the ashtray or the cupholder, if required.
Close the ashtray or the cupholder.

this should be what you need,post back with any other questions.