factory xm tuner question s
im a new member, i do not have a cobalt, but i currently am doing a project with a gm radio out of a 2007 cobalt.
it is a xm ready version with the cat button on it.
i plan on installing it in my car along with xm.
my question is, i know the factory xm tuner is located near the back seats by the rear speakers, now how does this tuner connect to the factory cd player?
does it intercept the factory harness some how and plug into them and then have a plug that plugs into the back of the cd player?/
this is where im stuck on this.
also another question is, are all the factory xm tuners interchangeable?
thanks again all