Cool, so do you have to have the key in any special position?

I've been hesitant in looking at the GPS/Stereo units cause I did not want to jack with the factory radio setup.

 

nope.. the harness makes it think it is still in the dash. so you dont have to worrie about anything but doing it like you do now.

the harness was like 80.00 for it i belive i got it at crutchfeilds i bought it last year . But you can do a serch for relocation harness for G.M. radios and they come up on googel