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Try a soft rest of the system. With the vehicle running press and hold the menu and volume (mute) buttons for ~30 seconds and release. 


If that doesn't work try a hard reset. Disconnect both batteries, BOTH, and touch pos/neg cables together. Then let is sit for 30 minutes. Be aware with this the truck can take a while to find all your options again, like XM, heated seats, folding mirrors, cargo camera, etc.. 

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