2010 chevy impala ls not showing any psi for all 4 tires

I went through the dic settings and noticed it shows -- for all four tires psi. It was recently balanced aligned and rotated. When going through dic and there is nothing showing up for relearn tire location. Please help its driving me crazy seeing service tire pressure monitoring system and don't want to have to pay 15 bucks a tire to fix it
also took it to good year and they couldn't even get the sensors to show up in their system.

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