The 12200411 PCM is a 512kb with Blue/Red connectors used in 01 and 02. The 03 to 07 PCMs are 1mb PCMs with Blue/Green connectors. You can't flash a 512kb tune into a 1mb PCM and Vice/Versa. I have 03 and 05 Express Van DBC tunes in Tunercat format. If you can use them---Give me your E-Mail address and I will send them to you.

Jeff