These adapters have a checkered history. Some people had problems of lock-ups, where they would need to disconnect the adapters from the vehicle to "reset" them. Also, these adapters have been known to cause other problems with the GM Databus. For example, dealers attempting to download computer updates using a Tech2 have had problems when the adapters were installed. Another thing to note is that you still have to buy the Pioneer XM Tuner Module to plug into this adapter.
It's best to buy the GM XM Radio Kit if you want integrated XM Radio.
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