mbazinet

I have also recently had reliability issues with my wifi it was working just fine for months now it seems spotty. Sometimes its got a signal sometimes not, wondering if I have an antenna issue ? My dealer has opened a case # and OnStar wants me to contact the dealer next time I loose signal. They will drive a known "good" vehicle to my location to see if the problem can be replicated on the other truck. This diagnostic comes directly from GM so I will give it a try.

What brand of sub did you install ? I had the Kicker factory option installed in my 16 Denali best thing i ever did the dealer did the install clean and sounds great smooth not harsh. They make a Kicker for yours also

Contact Anthony at MVI technologies he can unlock you HMI module http://gm-navigation.com/

FAT 32

I found a great software converter :http://www.tuneskit.com/tuneskit-for-mac.html this works very well with items you have in your iTunes library it does all the work files come out as MP4 x 480 resolution, after the files runs, simply dump the files onto your USB stick plug it into the reader in the center console under the armrest and you should be able to see the media choice come up on your system under media. i am still playing with files sizes but so far a SD movie converted seems to play pretty well.