I had my z2 installed at circuit city and they have my onstar coming out of a seperate speaker and not all of them. Is there a way to have my onstar work on all the speakers. I think i have everthing i need. Can any one help with this problem.

What year is the overpriced suburban? And which offstar interface did circuit shitty used?

Isn't the Onstar on the GM/Caddy supposed to come out of the front's only?

On my Denali the OnStar is only through the fronts, and I don't think you can change it to come through all the speaks.

I use the GMOS-04 and that should also would work if your Escalade is the 03-06, but give MO INFO on your setup.