Where is this disc located? My 2010 tahoe is for sure out dated. I tried to put an address in it and before I could finish spelling out the name of the road it kept finishing spelling it for me and it wasn't the correct road,when I tried to force the correct spelling it wouldn't let me input any letters except what it had highlighted. I ended up having to google it on my phone. I just bought this Tahoe 2 weeks ago and not very familiar with it.