If you bought your vehicle from a Hummer dealer new or used before Feb of 2008 there should have been a coupon in the owners manual for the two free discs. If the sales rep told you about the two free discs, tell that to the rep when you call and you should get a "customer service" one time exception. Again, I believe the program ended in early 2008 so anything after that does not appear to qualify for the free nav disc.
