I've had a 2011 GMC Yukon XL Denali for a year. Recently started having some passenger front door issues. Started with the radio cutting in and out when the door was opened. Now the passenger side running board won't retract when the door is closed and the power lock for the door quit. I pulled the door card and can't see anything that is obvious. With the electronic issues I'm leaning towards a wiring problem. Any one else have any similar issues and what did you find?