The tunnel connects and I am able to grab an IP address from the correct range. However, I am not able to pass traffic between the tunnel (192.168.5.0) and the DMZ interface/network (192.168.4.0).
What piece or pieces am I missing from my configuration?
I have attached the config.
dmz nat exemption acl should be
access-list NamPix_DVC_nat0_outbound extended permit 192.168.4.0 255.255.255.0 192.168.5.0 255.255.255.0
Also, I don't think you need this route...
no route NamPix_DVC 192.168.5.0 255.255.255.0 192.168.4.1 1
You also have no group policy cdcvid defined.