Has anyone converted their power windows with the auto down feature to also go auto up. I have a 2008 LTZ, whose interior closely looks the same as the Suburbans and Caddies Escalade and Avalanch like model. The Caddie has an auto up function, which leads me to think it may just be a switch and possibly a wire or two. I go through a tollbooth regularly that sometimes has up to 7 lanes quickly going down to 2 lanes. The last thing I like doing is holding the stincking up button and dodgeing cars with one hand. If they can make it go down with one touch, then they should do the same going up. Crap, little VW Bugs have that feature and my $37K truck doesn't.