Buick Repair Questions? Ask a Mechanic for Answers ASAP
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the display led screen for the radio is out , now if that was coincidence or not cause you removed or installed the radio should no cause it .
unless battery was not disconnected and it got a surge of power while plug in the connector back
these radio screen on the buick lesabre do go out it is common and i have changed a few of them over the years in my shop
junk yard sells them at least here in sc for $45 used