I am looking at a 2007 H3, on a used car dealer's lot, that has OEM cross racks on the roof.
The dealer does not have the keys for these racks. Are OEM keys available and are there different key patterns? What do I need to know if I were to try to get new keys ?

 

The dealer should be able to get the key for it.

 

Not sure about GM or Hummers, but on my PT, the dealer just takes the number off the key cylinder on the rack and uses that to get you the right keys, they were very cheap through Chrysler.