Transmission/clutch not engaging.

[davesmopar]

Is my transmission done for?

2016 Sierra, 103k mi, no error codes or lights. Without warning the clutch seems to completely disengage. I will loose every gear but Neutral. Taking the key out and starting it again fixes it for a time. Problems usually start after I come to a complete stop in Drive (like at a red light). Can someone tell me its a cheap fix computer problem please. I know its not the truth but it might make me feel better anyway. Thanks