05 GMC Yukon Denali XL turn signals operate hazards issue

My 2005 GMC Yukon Denali XL (6. 0L V8) has been having issues with the turn signal activating the hazard lights. It used to be only when I used the right turn signal, the hazards would come on, but now it randomly happens with both. It'll do it for maybe 15 minutes or maybe up to 3 days.

I read on Edmunds. com that someone with the same issue replaced the multifunction switch and it didn't go away. I think this GM TSB might have an answer, but am not sure:
gm technical service bulletins number 01946

Any ideas? I hate to mess with the multifunction switch (expensive) if that won't fix it.