GM Repair CD & DVD install

[RI Hummer]

Does anyone have the GM repair CD for the H2 ( although it covers all models)? Is it worth the $300 to purchase it. When I owned a Yukon and GMC Sierra I used to have the printed manuals and found them very helpful for everything from removing dash panels and wiring diagrams for stereo customizing. I have the BMW CD's and they are not as complete as the repair books from GM I used to have. I'm looking for wiring diagrams for the navigation system and detailed instructions on removing the seats, dash, doors and center console. The installer that installed the Vizualogic headrests and DVD that came with the H2 was a chump as the install eats up most of the storage on the center console. It also means CD's can not be stored in the slots provided. Has anyone installed the DVD in the console so that it is parallel to the windshield and tight towards the front or rear of the console? I'm adding an FM modulator so I can play MP3's through the DVD player and hear it through the speakers. Tho one issue with the Nav system is having to remove the disc to play a CD and no factory changer available (is that correct?). I would rather play MP3's anyway as all my music is stored that way and I can get over 150 songs on an MP3 disc.

Thanks,

RI HUMMER