I am looking for help. 2016 Impala with a blank MyLink screen. Center console radio buttons not working, Radio works with steering wheel controls but only for about 10 minutes after starting, then it cuts out. Will work again if car is restarted. Rear amp appears dry and corrosion free. No ghosting of center display, No backup camera image. No clock. All fuses are ok. Chimes work. HVAC seems a little wonky. Is it the HMI? I do not want to spend $400 replacing if that is not it. Any thoughts?

 

UPDATE: Replaced the HMI for $450.00 from White Automotive: https://www.whiteautoandmedia.com/pr...cement-gm-hmi/
They pre-programmed it with VIN so no trip to the dealer. Screen and all functions are restored. Just waiting for the outside temperature to calibrate itself. It reads -40 degrees since the HMI was installed.