Installing A Xm Harness

[Terp84Alum]

Ok. I just ordered the GM9-AUX for my 2000 Silverado. I have the factory stereo/cd with the remote cassette deck. The harness states that I must disconnect the cassette deck. The harness has a 9 pin that plugs into the back of my radio and then has a connector to accept the trucks original plug. I have the shop manuals. My questions:

 

1) Regarding the TheftLock, I have no idea what my code is and never really thought about it. Does the dealer generally enable this feature? Is what I'm undertaking going to require some "unlock" when I get done?

 

2) To disconnect the cassette deck, is there simply a plug that I unplug from the back of the unit?

 

Looking at the shop manuals, this looks like about a 30 minute undertaking. Am I underestimating the relative ease of this? Thanks a million.

[Terp84Alum]

Took me 5 minutes