Joined this forum because I didn't know where else to ask plus I know I'll be turning to this site for future questions/answers. I bought a 2017 Chevy Suburban Premier with the rear seat entertainment system and I plugged a Roku streaming stick into the HDMI port. I get picture and sound on the home menu screen of the Roku and can navigate through all the channels however when I choose a video to watch I only get sound and the screen is black. When I back out of the video the picture resumes with the home screen for the Roku and all is good again. I plugged it into my TV in my house and video and sound works fine. Can't figure out what I'm missing... Curious if anyone else has hooked up the Roku streaming stick in their vehicle. Thanks for the help!