I've been happily driving my 2003 Chevy Suburban Z71 for over 3 years now and I LOVE IT! But this past summer, while driving - my entire instrument panel went out! All gauges, everything! Since that has been fixed by the dealer, I seem to be having recurrent electrical (?) problems: horn is out for the 2nd time in 3 months, button to open back hatch window stopped working, auto locks suddenly stop working then start again, Onstar can't connect any phone calls (don't know if that's connected). What is happening? Does anyone have any info or experience with this?