I've done a search, but I'm having trouble finding the answer to this... what's the difference between the "XM Direct for GM factory radios" and the "Factory XM Upgrade" various resellers are offering?
You can see them both here:
http://www.jpcustoms.com/store/customer/home.php?cat=676
The both claim to work with the factory controls. One has a magenetic antenna, one you must (ugh) drill. XM Direct seems to come with a "tuner" too, but I'm not sure exactly what that means in relation to the install and factory control operation.
Big price difference.
Thanks!
You can see them both here:
http://www.jpcustoms.com/store/customer/home.php?cat=676
The both claim to work with the factory controls. One has a magenetic antenna, one you must (ugh) drill. XM Direct seems to come with a "tuner" too, but I'm not sure exactly what that means in relation to the install and factory control operation.
Big price difference.
Thanks!