2004 h2 nav disc

[HummerJim]

Nav discs are electronically write copy protected, so you can't copy them. They are on Ebay all the time as been previously mentioned. If the previous owners never got a nav upgrade disc you are entitled to one, however, I'm not sure that program is still in effect after GM discontinued the Hummer brand.

[pauldy]

To buy one hit up http://www.gmnavdisc.com/.

Right now they are 160 normally 200 bucks. The DVDs can be copied easily enough but it's just a lot for effort for a very niche audience. the people who do make copies usually just post them on ebay for a quick 40 here and there. If you plan on keeping your ride for a long time I would suggest just buying another head unit. You will get more features and you won't get beat down by the GM we got you now tax.