2016 Chevrolet Suburban touchscreen malfunction

Touchscreen takes control over dash info screen only when it is in closed position. Displays audio info over driving info.

Let us know the diagnosis and repair.

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there may be a update for your problem, contact your dealer. not sure if any of this pertains to you but you can take a look.
temp.xml (nhtsa.gov)
if it does it should be done by a dealer tech.